liu.seSearch for publications in DiVA
Endre søk
Begrens søket
123456 1 - 50 of 255
RefereraExporteraLink til resultatlisten
Permanent link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Treff pr side
  • 5
  • 10
  • 20
  • 50
  • 100
  • 250
Sortering
  • Standard (Relevans)
  • Forfatter A-Ø
  • Forfatter Ø-A
  • Tittel A-Ø
  • Tittel Ø-A
  • Type publikasjon A-Ø
  • Type publikasjon Ø-A
  • Eldste først
  • Nyeste først
  • Skapad (Eldste først)
  • Skapad (Nyeste først)
  • Senast uppdaterad (Eldste først)
  • Senast uppdaterad (Nyeste først)
  • Disputationsdatum (tidligste først)
  • Disputationsdatum (siste først)
  • Standard (Relevans)
  • Forfatter A-Ø
  • Forfatter Ø-A
  • Tittel A-Ø
  • Tittel Ø-A
  • Type publikasjon A-Ø
  • Type publikasjon Ø-A
  • Eldste først
  • Nyeste først
  • Skapad (Eldste først)
  • Skapad (Nyeste først)
  • Senast uppdaterad (Eldste først)
  • Senast uppdaterad (Nyeste først)
  • Disputationsdatum (tidligste først)
  • Disputationsdatum (siste først)
Merk
Maxantalet träffar du kan exportera från sökgränssnittet är 250. Vid större uttag använd dig av utsökningar.
  • 1.
    Alickovic, Emina
    et al.
    Linköpings universitet, Institutionen för systemteknik, Reglerteknik. Linköpings universitet, Tekniska fakulteten.
    Lunner, Thomas
    Linköpings universitet, Institutet för handikappvetenskap (IHV). Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för neuro- och inflammationsvetenskap. Linköpings universitet, Medicinska fakulteten. Eriksholm Research Centre, Oticon A/S, 20 Rortangvej, Snekkersten, Denmark.
    Gustafsson, Fredrik
    Linköpings universitet, Institutionen för systemteknik, Reglerteknik. Linköpings universitet, Tekniska fakulteten.
    A System Identification Approach to Determining Listening Attention from EEG Signals2016Inngår i: 2016 24TH EUROPEAN SIGNAL PROCESSING CONFERENCE (EUSIPCO), IEEE , 2016, s. 31-35Konferansepaper (Fagfellevurdert)
    Abstract [en]

    We still have very little knowledge about how ourbrains decouple different sound sources, which is known assolving the cocktail party problem. Several approaches; includingERP, time-frequency analysis and, more recently, regression andstimulus reconstruction approaches; have been suggested forsolving this problem. In this work, we study the problem ofcorrelating of EEG signals to different sets of sound sources withthe goal of identifying the single source to which the listener isattending. Here, we propose a method for finding the number ofparameters needed in a regression model to avoid overlearning,which is necessary for determining the attended sound sourcewith high confidence in order to solve the cocktail party problem.

  • 2.
    Alickovic, Emina
    et al.
    Linköpings universitet, Institutionen för systemteknik, Reglerteknik. Linköpings universitet, Tekniska fakulteten. Oticon AS, Denmark.
    Lunner, Thomas
    Linköpings universitet, Institutionen för systemteknik, Reglerteknik. Linköpings universitet, Tekniska fakulteten. Linköpings universitet, Institutet för handikappvetenskap (IHV). Oticon AS, Denmark; Tech Univ Denmark, Denmark.
    Gustafsson, Fredrik
    Linköpings universitet, Institutionen för systemteknik, Reglerteknik. Linköpings universitet, Tekniska fakulteten.
    Ljung, Lennart
    Linköpings universitet, Institutionen för systemteknik, Reglerteknik. Linköpings universitet, Tekniska fakulteten.
    A Tutorial on Auditory Attention Identification Methods2019Inngår i: Frontiers in Neuroscience, ISSN 1662-4548, E-ISSN 1662-453X, Vol. 13, artikkel-id 153Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Auditory attention identification methods attempt to identify the sound source of a listeners interest by analyzing measurements of electrophysiological data. We present a tutorial on the numerous techniques that have been developed in recent decades, and we present an overview of current trends in multivariate correlation-based and model-based learning frameworks. The focus is on the use of linear relations between electrophysiological and audio data. The way in which these relations are computed differs. For example, canonical correlation analysis (CCA) finds a linear subset of electrophysiological data that best correlates to audio data and a similar subset of audio data that best correlates to electrophysiological data. Model-based (encoding and decoding) approaches focus on either of these two sets. We investigate the similarities and differences between these linear model philosophies. We focus on (1) correlation-based approaches (CCA), (2) encoding/decoding models based on dense estimation, and (3) (adaptive) encoding/decoding models based on sparse estimation. The specific focus is on sparsity-driven adaptive encoding models and comparing the methodology in state-of-the-art models found in the auditory literature. Furthermore, we outline the main signal processing pipeline for how to identify the attended sound source in a cocktail party environment from the raw electrophysiological data with all the necessary steps, complemented with the necessary MATLAB code and the relevant references for each step. Our main aim is to compare the methodology of the available methods, and provide numerical illustrations to some of them to get a feeling for their potential. A thorough performance comparison is outside the scope of this tutorial.

  • 3.
    Andersen, Martin R.
    et al.
    Eriksholm Research Centre, Oticon A/S, Snekkersten, Denmark.
    Kristensen, Michael
    Eriksholm Research Centre, Oticon A/S, Snekkersten, Denmark.
    Neher, Tobias
    Eriksholm Research Centre, Oticon A/S, Snekkersten, Denmar.
    Lunner, Thomas
    Eriksholm Research Centre, Oticon A/S, Snekkerste.
    Side-Effects of Binaural Tone Vocoding on Recognising Target Speech Presented Against Spatially Separated Speech Maskers2012Inngår i: Speech Perception and Auditory Disorders / [ed] T Dau et al., Speech perception and auditory disorders. Proceedings of the International Symposium on Audiological and Auditory Research (ISAAR), Denmark, 2012, , s. 103-110s. 103-110Konferansepaper (Annet vitenskapelig)
    Abstract [en]

    Previous experiments have indicated that monaural Temporal Fine Structure (mTFS) information aids Speech Reception. In these experiments mTFS was either kept or substituted using a tone-vocoder. Results showed that hearing-impaired (HI) subjects were not able to utilise mTFS information to the same degree as normal-hearing (NH) subjects. A first step towards a more ecological experiment would be to exploit the tone-vocoder paradigm in a simulated spatial setup, and measure binaural TFS (bTFS) benefit.However, by the introduction of a binaural tone-vocoder, a concern arose that not only will the original Interaural Time Difference (ITD) cues be removed, but artificial ITD cues pointing to a direction determined by the phase difference between the carriers of the two channels, will also be introduced.This experiment investigated this concern, by measuring speech reception for target speech presented against spatially separated speech maskers. 21 NH and 21 HI subjects were tested in a fixed spatial condition with either the artificial ITD pointing forward (0º azimuth) or ±50º. Furthermore, a third condition utilising a paradigm that did not make use of a tone-vocoder, was included.Results showed that the artificial ITD affected NH and HI listeners equally, favouring the source whose direction it was pointing towards.

  • 4.
    Andersen, Martin Rune
    et al.
    Eriksholm Research Centre, Oticon A/S, Snekkersten, Denmark.
    Smed Kristensen, Michael
    Eriksholm Research Centre, Oticon A/S, Snekkersten, Denmark.
    Neher, Tobias
    Eriksholm Research Centre, Oticon A/S, Snekkersten, Denmark.
    Lunner, Thomas
    Eriksholm Research Centre, Oticon A/S, Snekkersten, Denmark.
    Effect of binaural tone vocoding on recognising target speech presented against spatially separated speech maskers2010Konferansepaper (Annet vitenskapelig)
  • 5.
    Andersson, Gerhard
    et al.
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Psykologi. Linköpings universitet, Filosofiska fakulteten. Oticon AS, Denmark; Karolinska Institute, Sweden.
    Lunner, Thomas
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten. Linköpings universitet, Institutet för handikappvetenskap (IHV). Oticon AS, Denmark.
    Laplante-Lévesque, Ariane
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten. Oticon AS, Denmark.
    Preminger, Jill E.
    University of Louisville, KY 40292 USA.
    Internet and Audiology: A Review of the First International Meeting2015Inngår i: American Journal of Audiology, ISSN 1059-0889, E-ISSN 1558-9137, Vol. 24, nr 3, s. 269-270Artikkel, forskningsoversikt (Fagfellevurdert)
    Abstract [en]

    Purpose: The purpose of this research forum article is to describe the impetus for holding the First International Meeting on Internet and Audiology (October 2014) and to introduce the special research forum that arose from the meeting. Method: The rationale for the First International Meeting on Internet and Audiology is described. This is followed by a short description of the research sections and articles appearing in the special issue. Six articles consider the process of health care delivery over the Internet; this includes health care specific to hearing, tinnitus, and balance. Four articles discuss the development of effective Internet-based treatment programs. Six articles describe and evaluate Internet-based interventions specific to adult hearing aid users. Conclusion: The fledgling field of Internet and audiology is remarkably broad. The Second International Meeting on Internet and Audiology ocurred in September 2015.

  • 6.
    Arehart, Kathryn H.
    et al.
    University of Colorado Boulder, Speech, Language, and Hearing Sciences.
    Souza, Pamela
    Northwestern University, Evanston, Communication Sciences and Disorders.
    Kates, James M.
    University of Colorado Boulder, Speech, Language, and Hearing Sciences.
    Lunner, Thomas
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten. Linköpings universitet, Institutet för handikappvetenskap (IHV). Snekkersten, Oticon A/S, Eriksholm Research Centre,Denmark.
    Pedersen, Michael Syskind
    Eriksholm Research Centre, Oticon A/S, Snekkersten, Denmark.
    Relationship between distortion, hearing loss and working memory for digital noise reduction2015Inngår i: Ear and Hearing, ISSN 0196-0202, E-ISSN 1538-4667, Vol. 36, nr 5, s. 505-516Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Objectives: This study considered speech modified by additive babble combined with noise-suppression processing. The purpose was to determine the relative importance of the signal modifications, individual peripheral hearing loss, and individual cognitive capacity on speech intelligibility and speech quality.

    Design: The participant group consisted of 31 individuals with moderate high-frequency hearing loss ranging in age from 51 to 89 years (mean = 69.6 years). Speech intelligibility and speech quality were measured using low-context sentences presented in babble at several signal-to-noise ratios. Speech stimuli were processed with a binary mask noise-suppression strategy with systematic manipulations of two parameters (error rate and attenuation values). The cumulative effects of signal modification produced by babble and signal processing were quantified using an envelope-distortion metric. Working memory capacity was assessed with a reading span test. Analysis of variance was used to determine the effects of signal processing parameters on perceptual scores. Hierarchical linear modeling was used to determine the role of degree of hearing loss and working memory capacity in individual listener response to the processed noisy speech. The model also considered improvements in envelope fidelity caused by the binary mask and the degradations to envelope caused by error and noise.

    Results: The participants showed significant benefits in terms of intelligibility scores and quality ratings for noisy speech processed by the ideal binary mask noise-suppression strategy. This benefit was observed across a range of signal-to-noise ratios and persisted when up to a 30% error rate was introduced into the processing. Average intelligibility scores and average quality ratings were well predicted by an objective metric of envelope fidelity. Degree of hearing loss and working memory capacity were significant factors in explaining individual listener’s intelligibility scores for binary mask processing applied to speech in babble. Degree of hearing loss and working memory capacity did not predict listeners’ quality ratings.

    Conclusions: The results indicate that envelope fidelity is a primary factor in determining the combined effects of noise and binary mask processing for intelligibility and quality of speech presented in babble noise. Degree of hearing loss and working memory capacity are significant factors in explaining variability in listeners’ speech intelligibility scores but not in quality ratings.

  • 7.
    Arehart, Kathryn
    et al.
    University of Colorado, CO 80309 USA.
    Souza, Pamela
    Northwestern University, IL USA.
    Kates, James
    University of Colorado, CO 80309 USA.
    Lunner, Thomas
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten. Linköpings universitet, Institutet för handikappvetenskap (IHV). Oticon AS, Denmark.
    Syskind Pedersen, Michael
    Oticon AS, Denmark.
    Relationship Among Signal Fidelity, Hearing Loss, and Working Memory for Digital Noise Suppression2015Inngår i: Ear and Hearing, ISSN 0196-0202, E-ISSN 1538-4667, Vol. 36, nr 5, s. 505-516Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Objectives: This study considered speech modified by additive babble combined with noise-suppression processing. The purpose was to determine the relative importance of the signal modifications, individual peripheral hearing loss, and individual cognitive capacity on speech intelligibility and speech quality. Design: The participant group consisted of 31 individuals with moderate high-frequency hearing loss ranging in age from 51 to 89 years (mean = 69.6 years). Speech intelligibility and speech quality were measured using low-context sentences presented in babble at several signal-to-noise ratios. Speech stimuli were processed with a binary mask noise-suppression strategy with systematic manipulations of two parameters (error rate and attenuation values). The cumulative effects of signal modification produced by babble and signal processing were quantified using an envelope-distortion metric. Working memory capacity was assessed with a reading span test. Analysis of variance was used to determine the effects of signal processing parameters on perceptual scores. Hierarchical linear modeling was used to determine the role of degree of hearing loss and working memory capacity in individual listener response to the processed noisy speech. The model also considered improvements in envelope fidelity caused by the binary mask and the degradations to envelope caused by error and noise. Results: The participants showed significant benefits in terms of intelligibility scores and quality ratings for noisy speech processed by the ideal binary mask noise-suppression strategy. This benefit was observed across a range of signal-to-noise ratios and persisted when up to a 30% error rate was introduced into the processing. Average intelligibility scores and average quality ratings were well predicted by an objective metric of envelope fidelity. Degree of hearing loss and working memory capacity were significant factors in explaining individual listeners intelligibility scores for binary mask processing applied to speech in babble. Degree of hearing loss and working memory capacity did not predict listeners quality ratings. Conclusions: The results indicate that envelope fidelity is a primary factor in determining the combined effects of noise and binary mask processing for intelligibility and quality of speech presented in babble noise. Degree of hearing loss and working memory capacity are significant factors in explaining variability in listeners speech intelligibility scores but not in quality ratings.

  • 8.
    Arehart, Kathryn
    et al.
    University of Colorado, UCB 409, Boulder, Departmen of Speech , Language and Hearing Sciences.
    Souza, Pamela
    Northwestern University, Roxelyn and Richard Pepper Department of Communication Sciences and Disorders, United States.
    Lunner, Thomas
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten. Linköpings universitet, Institutet för handikappvetenskap (IHV). Eriksholm Research Centre, Snekkersten, Denmark.
    Syskin Pedersen, Michael
    Oticon.
    James M, Kate
    University of Colorado at Boulder , Department of Speech, Language and Hearing Sciences (SLHS), Electrical Engineering..
    Relationship between distortion and working memory for digital noise-reduction processing in hearing aids2014Inngår i: Journal of the Acoustical Society of America, ISSN 0001-4966, Vol. 133, nr 5Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Several recent studies have shown a relationship between working memory and the ability of older adults to benefit from specific advanced signal processing algorithms in hearing aids. In this study, we quantify tradeoffs between benefit due to noise reduction and the perceptual costs associated with distortion caused by the noise reduction algorithm. We also investigate the relationship between these tradeoffs and working memory abilities. Speech intelligibility, speech quality, and perceived listening effort were measured in a cohort of elderly adults with hearing loss. Test materials were low-context sentences presented in fluctuating noise conditions at several signal-to-noise ratios. Speech stimuli were processed with a binary mask noise-reduction strategy. The amount of distortion produced by the noise reduction algorithm was parametrically varied by manipulating two binary mask parameters, error rate, and attenuation rate. Working memory was assessed with a reading span test. Results will be discussed in terms of the extent to which intelligibility, quality, and effort ratings are explained by the amount of distortion and/or noise and by working memory ability. [Funded by NIH, Oticon, and GN ReSound.].

  • 9.
    Arehart, Kathryn
    et al.
    Eriksholm Research Centre Oticon A/S, Snekkersten, Denmark .
    Souza, Pamela
    Eriksholm Research Centre Oticon A/S, Snekkersten, Denmark .
    Lunner, Thomas
    Eriksholm Research Centre, Oticon A/S, Snekkersten.
    Syskin Pedersen, Michael
    Oticon A/S, Smo/rum, Denmark .
    Kates, James
    Speech Language and Hearing Sciences, University of Colorado Boulder, USA.
    Relationship between distortion and working memory for digital noise-reduction processing in hearing aids2013Inngår i: Proceedings of Meetings on Acoustics: ICA 2013 Montreal, Acoustical Society of America (ASA), 2013, s. 050084-1-050084-8Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Several recent studies have shown a relationship between working memory and the ability of older adults to benefit from specific advanced signal processing algorithms in hearing aids. In this study, we quantify tradeoffs between benefit due to noise reduction and the perceptual costs associated with distortion caused by the noise reduction algorithm. We also investigate the relationship between these tradeoffs and working memory abilities. Speech intelligibility, speech quality and perceived listening effort were measured in a cohort of elderly adults with hearing loss. Test materials were low-context sentences presented in fluctuating noise conditions at several signal-to-noise ratios. Speech stimuli were processed with a binary mask noise-reduction strategy. The amount of distortion produced by the noise reduction algorithm was parametrically varied by manipulating two binary mask parameters, error rate and attenuation rate. Working memory was assessed with a reading span test. Results will be discussed in terms of the extent to which intelligibility, quality and effort ratings are explained by the amount of distortion and/or noise and by working memory ability.[Funded by NIH, Oticon and GN ReSound]

  • 10.
    Arlinger, Stig
    et al.
    Linköpings universitet, Institutionen för nervsystem och rörelseorgan, Teknisk audiologi. Linköpings universitet, Hälsouniversitetet.
    Billermark, Erica
    Linköpings universitet, Institutionen för nervsystem och rörelseorgan, Teknisk audiologi. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Sinnescentrum, Öron- näsa- och halskliniken US.
    Öberg, Marie
    Linköpings universitet, Institutionen för nervsystem och rörelseorgan, Teknisk audiologi. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Sinnescentrum, Öron- näsa- och halskliniken US.
    Lunner, Thomas
    Linköpings universitet, Institutionen för nervsystem och rörelseorgan, Teknisk audiologi. Linköpings universitet, Hälsouniversitetet.
    Hellgren, Johan
    Linköpings universitet, Institutionen för nervsystem och rörelseorgan, Teknisk audiologi. Linköpings universitet, Hälsouniversitetet.
    Clinical trial of a digital hearing aid1998Inngår i: Scandinavian Audiology, ISSN 0105-0397, E-ISSN 1940-2872, Vol. 27, nr 1, s. 51-61Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    A clinical trial of Oticon DigiFocus hearing aid was performed. The test aid was evaluated on 33 subjects with several years' experience as users of modern analog hearing aids. These aids were used as reference for the 1-month-long trial. The Abbreviated Profile of Hearing Aid Benefit (APHAB) showed a mean difference in benefit with superior ratings for the test aid concerning ease of communication, speech in reverberation and speech in background noise. The subjects' own aids were rated somewhat better concerning aversiveness of sounds, but this difference was not statistically significant. The Gothenburg Profile showed a statistically significant difference between the test aid and the reference aids in favour of the test aid. The difference was not most evident with regard to speech communication and the effects of hearing loss on social interactions. Sound quality ratings concerning clearness were significantly higher for the test aid. Speech recognition thresholds in noise were on average 0.7 dB better for the test aids when tested at speech levels 60 and 75 dB. The difference was statistically significant only at 75 dB. There was significant interaction between general preference and hearing aid type, indicating that overall sound quality was an important factor affecting the general preference for either the test aid or the reference aid. Twenty-three subjects generally preferred the test aid, six preferred their own aid and four stated no difference.

  • 11.
    Arlinger, Stig
    et al.
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Teknisk audiologi. Linköpings universitet, Hälsouniversitetet.
    Larsby, Birgitta
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Teknisk audiologi. Linköpings universitet, Hälsouniversitetet.
    Lunner, Thomas
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Teknisk audiologi. Linköpings universitet, Hälsouniversitetet.
    Hellgren, Johan
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Teknisk audiologi. Linköpings universitet, Hälsouniversitetet.
    Assessment of speech perception in noise using a conventional speech recognition and a subjective adjustment method.1994Konferansepaper (Fagfellevurdert)
  • 12.
    Arlinger, Stig
    et al.
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Oto-Rhino-Laryngologi. Linköpings universitet, Hälsouniversitetet.
    Lunner, Thomas
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Teknisk audiologi. Linköpings universitet, Hälsouniversitetet.
    Lyxell, Björn
    Linköpings universitet, Institutionen för beteendevetenskap och lärande. Linköpings universitet, Filosofiska fakulteten. Östergötlands Läns Landsting, Rekonstruktionscentrum, Öronkliniken US.
    Pichora-Fuller, M Kathleen
    University of Toronto.
    The emergence of cognitive hearing science.2009Inngår i: Scandinavian journal of psychology, ISSN 1467-9450, Vol. 50, nr 5, s. 371-384Artikkel, forskningsoversikt (Fagfellevurdert)
    Abstract [en]

    Cognitive Hearing Science or Auditory Cognitive Science is an emerging field of interdisciplinary research concerning the interactions between hearing and cognition. It follows a trend over the last half century for interdisciplinary fields to develop, beginning with Neuroscience, then Cognitive Science, then Cognitive Neuroscience, and then Cognitive Vision Science. A common theme is that an interdisciplinary approach is necessary to understand complex human behaviors, to develop technologies incorporating knowledge of these behaviors, and to find solutions for individuals with impairments that undermine typical behaviors. Accordingly, researchers in traditional academic disciplines, such as Psychology, Physiology, Linguistics, Philosophy, Anthropology, and Sociology benefit from collaborations with each other, and with researchers in Computer Science and Engineering working on the design of technologies, and with health professionals working with individuals who have impairments. The factors that triggered the emergence of Cognitive Hearing Science include the maturation of the component disciplines of Hearing Science and Cognitive Science, new opportunities to use complex digital signal-processing to design technologies suited to performance in challenging everyday environments, and increasing social imperatives to help people whose communication problems span hearing and cognition. Cognitive Hearing Science is illustrated in research on three general topics: (1) language processing in challenging listening conditions; (2) use of auditory communication technologies or the visual modality to boost performance; (3) changes in performance with development, aging, and rehabilitative training. Future directions for modeling and the translation of research into practice are suggested.

  • 13.
    Bech Christensen, Christian
    et al.
    Aarhus Univ, Denmark.
    Hietkamp, Renskje K.
    Eriksholm Res Ctr, Denmark.
    Harte, James M.
    DGS Diagnost AS, Denmark.
    Lunner, Thomas
    Linköpings universitet, Institutionen för systemteknik, Reglerteknik. Linköpings universitet, Tekniska fakulteten. Linköpings universitet, Institutet för handikappvetenskap (IHV). Eriksholm Res Ctr, Denmark.
    Kidmose, Preben
    Aarhus Univ, Denmark.
    Toward EEG-Assisted Hearing Aids: Objective Threshold Estimation Based on Ear-EEG in Subjects With Sensorineural Hearing Loss2018Inngår i: TRENDS IN HEARING, ISSN 2331-2165, Vol. 22, artikkel-id 2331216518816203Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Electrophysiological feedback on activity in the auditory pathway may potentially advance the next generation of hearing aids. Conventional electroencephalographic (EEG) systems are, however, impractical during daily life and incompatible with hearing aids. Ear-EEG is a method in which the EEG is recorded from electrodes embedded in a hearing aid like earpiece. The method therefore provides an unobtrusive way of measuring neural activity suitable for use in everyday life. This study aimed to determine whether ear-EEG could be used to estimate hearing thresholds in subjects with sensorineural hearing loss. Specifically, ear-EEG was used to determine physiological thresholds at 0.5, 1, 2, and 4 kHz using auditory steady-state response measurements. To evaluate ear-EEG in relation to current methods, thresholds were estimated from a concurrently recorded conventional scalp EEG. The threshold detection rate for ear-EEG was 20% lower than the detection rate for scalp EEG. Thresholds estimated using in-ear referenced ear-EEG were found to be elevated at an average of 5.9, 2.3, 5.6, and 1.5 dB relative to scalp thresholds at 0.5, 1, 2, and 4 kHz, respectively. No differences were found in the variance of means between in-ear ear-EEG and scalp EEG. In-ear ear-EEG, auditory steady-state response thresholds were found at 12.1 to 14.4 dB sensation level with an intersubject variation comparable to that of behavioral thresholds. Collectively, it is concluded that although further refinement of the method is needed to optimize the threshold detection rate, ear-EEG is a feasible method for hearing threshold level estimation in subjects with sensorineural hearing impairment.

  • 14.
    Bernstein, Joshua G
    et al.
    National Military Audiology and Speech Pathology Center Walter Reed National Military Medical Center, Bethesda, MD, USA.
    Danielsson, Henrik
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten. Linköpings universitet, Institutet för handikappvetenskap (IHV).
    Hällgren, Mathias
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för neurovetenskap. Linköpings universitet, Hälsouniversitetet. Linnaeus Centre HEAD.
    Stenfelt, Stefan
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för neurovetenskap. Linköpings universitet, Hälsouniversitetet.
    Rönnberg, Jerker
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten. Linköpings universitet, Institutet för handikappvetenskap (IHV).
    Lunner, Thomas
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten. Linköpings universitet, Institutet för handikappvetenskap (IHV).
    Spectrotemporal modulation sensitivity as a predictor of speech intelligibility in noise with hearing aids2014Inngår i: Spectrotemporal modulation sensitivity as a predictor of speech intelligibility in noise with hearing aids, 2014Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The audiogram predicts less than a third of the variance in speech reception thresholds (SRTs) for hearing-impaired (HI) listeners properly fit with individualized frequency-dependent gain. The remaining variance is often attributed to a combination of su-prathreshold distortion in the auditory pathway and non-auditory factors such as cogni-tive processing. Distinguishing between these factors requires a measure of suprathresh-old auditory processing to account for the non-cognitive contributions. Preliminary re-sults in 12 HI listeners identified a correlation between spectrotemporal modulation (STM) sensitivity and speech intelligibility in noise presented over headphones. The cur-IHCON 2014 27 August 13-17, 2014rent study assessed the effectiveness of STM sensitivity as a measure of suprathreshold auditory function to predict free-field SRTs in noise for a larger group of 47 HI listeners with hearing aids.SRTs were measured for Hagerman sentences presented at 65 dB SPL in stationary speech-weighted noise or four-talker babble. Pre-recorded speech and masker stimuli were played through a small anechoic chamber equipped with a master hearing aid pro-grammed with individualized gain. The output from an IEC711 Ear Simulator was played binaurally through insert earphones. Three processing algorithms were examined: linear gain, linear gain plus noise reduction, or fast-acting compressive gain.STM stimuli consist of spectrally-rippled noise with spectral-peak frequencies that shift over time. STM with a 2-cycle/octave spectral-ripple density and a 4-Hz modulation rate was applied to a 2-kHz lowpass-filtered pink-noise carrier. Stimuli were presented over headphones at 80 dB SPL (±5-dB roving). The threshold modulation depth was estimated adaptively in a two-alternative forced-choice task.STM sensitivity was strongly correlated (R2=0.48) with the global SRT (i.e., the SRTs averaged across masker and processing conditions). The high-frequency pure-tone aver-age (3-8 kHz) and age together accounted for 23% of the variance in global SRT. STM sensitivity accounted for an additional 28% of the variance in global SRT (total R2=0.51) when combined with these two other metrics in a multiple-regression analysis. Correla-tions between STM sensitivity and SRTs for individual conditions were weaker for noise reduction than for the other algorithms, and marginally stronger for babble than for sta-tionary noise.The results are discussed in the context of previous work suggesting that STM sensitivity for low rates and low carrier frequencies is impaired by a reduced ability to use temporal fine-structure information to detect slowly shifting spectral peaks. STM detection is a fast, simple test of suprathreshold auditory function that accounts for a substantial pro-portion of variability in hearing-aid outcomes for speech perception in noise.

  • 15.
    Bernstein, Joshua G. W.
    et al.
    Walter Reed National Mil Medical Centre, MD 20889 USA.
    Danielsson, Henrik
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten. Linköpings universitet, Institutet för handikappvetenskap (IHV).
    Hällgren, Mathias
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för neuro- och inflammationsvetenskap. Linköpings universitet, Medicinska fakulteten. Region Östergötland, Sinnescentrum, Öron- näsa- och halskliniken US.
    Stenfelt, Stefan
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för neuro- och inflammationsvetenskap. Linköpings universitet, Medicinska fakulteten.
    Rönnberg, Jerker
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten. Linköpings universitet, Institutet för handikappvetenskap (IHV).
    Lunner, Thomas
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten. Linköpings universitet, Institutet för handikappvetenskap (IHV). Oticon AS, Denmark.
    Spectrotemporal Modulation Sensitivity as a Predictor of Speech-Reception Performance in Noise With Hearing Aids2016Inngår i: TRENDS IN HEARING, ISSN 2331-2165, Vol. 20, artikkel-id 2331216516670387Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The audiogram predicts amp;lt;30% of the variance in speech-reception thresholds (SRTs) for hearing-impaired (HI) listeners fitted with individualized frequency-dependent gain. The remaining variance could reflect suprathreshold distortion in the auditory pathways or nonauditory factors such as cognitive processing. The relationship between a measure of suprathreshold auditory function-spectrotemporal modulation (STM) sensitivity-and SRTs in noise was examined for 154 HI listeners fitted with individualized frequency-specific gain. SRTs were measured for 65-dB SPL sentences presented in speech-weighted noise or four-talker babble to an individually programmed master hearing aid, with the output of an ear-simulating coupler played through insert earphones. Modulation-depth detection thresholds were measured over headphones for STM (2cycles/octave density, 4-Hz rate) applied to an 85-dB SPL, 2-kHz lowpass-filtered pink-noise carrier. SRTs were correlated with both the high-frequency (2-6 kHz) pure-tone average (HFA; R-2 = .31) and STM sensitivity (R-2 = .28). Combined with the HFA, STM sensitivity significantly improved the SRT prediction (Delta R-2 = .13; total R-2 = .44). The remaining unaccounted variance might be attributable to variability in cognitive function and other dimensions of suprathreshold distortion. STM sensitivity was most critical in predicting SRTs for listenersamp;lt;65 years old or with HFA amp;lt;53 dB HL. Results are discussed in the context of previous work suggesting that STM sensitivity for low rates and low-frequency carriers is impaired by a reduced ability to use temporal fine-structure information to detect dynamic spectra. STM detection is a fast test of suprathreshold auditory function for frequencies amp;lt;2 kHz that complements the HFA to predict variability in hearing-aid outcomes for speech perception in noise.

  • 16.
    Bianchi, Federica
    et al.
    Oticon Med AB, Denmark.
    Wendt, Dorothea
    Oticon AS, Denmark; Tech Univ Denmark, Denmark.
    Wassard, Christina
    Oticon Med AB, Denmark.
    Maas, Patrick
    Oticon Med AB, Denmark; Oticon Med, Germany.
    Lunner, Thomas
    Linköpings universitet, Institutionen för systemteknik, Reglerteknik. Linköpings universitet, Tekniska fakulteten. Linköpings universitet, Institutet för handikappvetenskap (IHV). Oticon AS, Denmark; Tech Univ Denmark, Denmark; Orebro Univ, Sweden.
    Rosenbom, Tove
    Oticon Med AB, Denmark.
    Holmberg, Marcus
    Oticon Med AB, Sweden.
    Benefit of Higher Maximum Force Output on Listening Effort in Bone-Anchored Hearing System Users: A Pupillometry Study2019Inngår i: Ear and Hearing, ISSN 0196-0202, E-ISSN 1538-4667, Vol. 40, nr 5, s. 1220-1232Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Objectives: The aim of this study was to compare listening effort, as estimated via pupillary response, during a speech-in-noise test in bone-anchored hearing system (BAHS) users wearing three different sound processors. The three processors, Ponto Pro (PP), Ponto 3 (P3), and Ponto 3 SuperPower (P3SP), differ in terms of maximum force output (MFO) and MFO algorithm. The hypothesis was that listeners would allocate lower listening effort with the P3SP than with the PP, as a consequence of a higher MFO and, hence, fewer saturation artifacts in the signal. Design: Pupil dilations were recorded in 21 BAHS users with a conductive or mixed hearing loss, during a speech-in-noise test performed at positive signal-to-noise ratios (SNRs), where the speech and noise levels were individually adjusted to lead to 95% correct intelligibility with the PP. The listeners had to listen to a sentence in noise, retain it for 3 seconds and then repeat it, while an eye-tracking camera recorded their pupil dilation. The three sound processors were tested in random order with a single-blinded experimental design. Two conditions were performed at the same SNR: Condition 1, where the speech level was designed to saturate the PP but not the P3SP, and condition 2, where the overall sound level was decreased relative to condition 1 to reduce saturation artifacts. Results: The P3SP led to higher speech intelligibility than the PP in both conditions, while the performance with the P3 did not differ from the performance with the PP and the P3SP. Pupil dilations were analyzed in terms of both peak pupil dilation (PPD) and overall pupil dilation via growth curve analysis (GCA). In condition 1, a significantly lower PPD, indicating a decrease in listening effort, was obtained with the P3SP relative to the PP. The PPD obtained with the P3 did not differ from the PPD obtained with the other two sound processors. In condition 2, no difference in PPD was observed across the three processors. The GCA revealed that the overall pupil dilation was significantly lower, in both conditions, with both the P3SP and the P3 relative to the PP, and, in condition 1, also with the P3SP relative to the P3. Conclusions: The overall effort to process a moderate to loud speech signal was significantly reduced by using a sound processor with a higher MFO (P3SP and P3), as a consequence of fewer saturation artifacts. These findings suggest that sound processors with a higher MFO may help BAHS users in their everyday listening scenarios, in particular in noisy environments, by improving sound quality and, thus, decreasing the amount of cognitive resources utilized to process incoming speech sounds.

  • 17.
    Boenitz, Hanna
    et al.
    Hannover Medical Sch, Germany.
    Kopp, Bruno
    Hannover Medical Sch, Germany.
    Buechner, Andreas
    Hannover Medical Sch, Germany; Cluster Excellence Hearing4all, Germany.
    Lunner, Thomas
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten. Linköpings universitet, Institutet för handikappvetenskap (IHV). Oticon AS, Denmark.
    Lyxell, Björn
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten. Linköpings universitet, Institutet för handikappvetenskap (IHV).
    Finke, Mareike
    Hannover Medical Sch, Germany; Cluster Excellence Hearing4all, Germany.
    Event-related neuronal responses to acoustic novelty in single-sided deaf cochlear implant users: Initial findings2018Inngår i: Clinical Neurophysiology, ISSN 1388-2457, E-ISSN 1872-8952, Vol. 129, nr 1, s. 133-142Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Objective: A cochlear implant (CI) is an auditory prosthesis restoring profound hearing loss. However, CItransmitted sounds are degraded compared to normal acoustic hearing. We investigated cortical responses related to CI-degraded against acoustic listening. Methods: Event-related potentials (ERPs) were recorded from eight single-sided deaf CI users who performed a three-stimulus oddball task, separatelywith their normal hearing ear and CI ear. The oddball tones were occasionally intermitted by novel sounds. ERP responses were compared between electric and acoustic listening for the auditory (N1) and auditory-cognitive (Novelty P3, Target-P3) ERP components. Results: CI-degraded listening was associated with attenuated sensory processing (N1) and with attenuated early cortical responses to acoustic novelty whereas the late cortical responses to acoustic novelty and the target-P3 did not differ between NH and CI ears. Conclusion: The present study replicates the CI-attenuation of Novelty-P3 amplitudes in a within-subject comparison. Further, we show that the CI-attenuation of Novelty-P3 amplitudes extends to early cortical responses to acoustic novelty, but not to late novelty responses. Significance: The dissociation into CI-attenuated P3 early Novelty-P3 amplitudes and CI-unaffected late Novelty-P3 amplitudes represents a cortical fingerprint of CI-degraded listening. It further contributes to general claims of distinct auditory Novelty-P3 sub-components. (C) 2017 International Federation of Clinical Neurophysiology. Published by Elsevier Ireland Ltd. All rights reserved.

  • 18. Borch Petersen, E
    et al.
    Wöstmann, M
    Obleser, J
    Stenfelt, Stefan
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för neurovetenskap. Linköpings universitet, Hälsouniversitetet.
    Lunner, Thomas
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Hälsouniversitetet. Linköpings universitet, Institutet för handikappvetenskap (IHV). Eriksholm Research Centre, Snekkersten, Denmark.
    Compensated hearing loss predicts generation of auditory evoked potentials.2014Konferansepaper (Fagfellevurdert)
  • 19.
    Borch Petersen, Eline
    et al.
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Teknisk audiologi. Linköpings universitet, Institutet för handikappvetenskap (IHV). Eriksholm Research Centre, Snekkersten, Denmark .
    Lunner, Thomas
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Teknisk audiologi. Linköpings universitet, Institutet för handikappvetenskap (IHV). Eriksholm Research Centre, Snekkersten, Denmark .
    Cognitive Hearing Aids? - Insights and Possibilities2015Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The working memory plays an important role in successfully overcoming adverse listening conditions and should consequently be considered when designing and testing hearing aids. A number of studies have established the relationship between hearing in noise and working memory involvement, but with the Sentence-final Word Identification and Recall (SWIRL) test, it is possible to show that working memory is also involved in listening under favorable conditions and that noise reduction has a positive influence in situation with very little noise. Although the capacity of the working memory is a finite individual size, its involvement can differ with fatigue and other factors and individualization of hearing aids should take this into account to obtain the best performance. A way of individually adapting hearing aids is based on changes in the electrical activity of the brain (EEG). Here we present the possibilities that arise from using EEG and show that ear-mounted electrodes is able to record useful EEG that can be explored for individualization of hearing aids. Such an adaptation could be done based on changes in the electrical activity of the brain (EEG). Here we present the possibilities that arise from using EEG and show that ear-mounted electrodes is able to record useful EEG that can be explored for individualization of hearing aids.

  • 20.
    Borch Petersen, Eline
    et al.
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för neuro- och inflammationsvetenskap. Linköpings universitet, Medicinska fakulteten. Eriksholm Research Centre, Snekkersten, Denmark,.
    Lunner, Thomas
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten. Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för neuro- och inflammationsvetenskap. Linköpings universitet, Medicinska fakulteten. Eriksholm Research Centre, Snekkersten, Denmark,.
    Vestergaard, Martin
    University of Cambridge, Centre for the Neural Basis of Hearing.
    Sundewall Thorén, Elisabet
    Eriksholm Research Centre, Snekkersten, Denmark,.
    Danish Reading Span data from 283 hearing-aid users, including a sub-group analysis of their relationship to speech-in-noise performance2016Inngår i: International Journal of Audiology, ISSN 1499-2027, E-ISSN 1708-8186, Vol. 55, nr 4, s. 254-261Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Objective: This study provides descriptive statistics of the Danish reading span (RS) test for hearing-impaired adults. The combined effect of hearing loss, RS score, and age on speech-in-noise performance in different spatial settings was evaluated in a subset of participants. Design: Data from published and unpublished studies were re-analysed. Data regarding speech-in-noise performance with co-located or spatially separated sound sources were available for a subset of participants. Study sample: RS scores from 283 hearing-impaired participants were extracted from past studies, and 239 of these participants had completed a speech-in-noise test. Results: RS scores (mean = 41.91%, standard deviation = 11.29%) were related to age (p <0.01), but not pure-tone average (PTA) (p = 0.29). Speech-in-noise performance for co-located sound sources was related to PTA and RS score (both p < 0.01, adjusted R-squared = 0.226). Performance for spatially separated sounds was related to PTA (p < 0.01, adjusted R-squared = 0.10) but not RS score (p = 0.484). We found no differences between the standardized coefficients of the two regression models. Conclusions: The distribution of RS scores indicated a high test difficulty. We found that age should be controlled when RS scores are compared across populations. The experimental setup of the speech-in-noise test may influence the relationship between performance and RS score.

  • 21.
    Borch Petersen, Eline
    et al.
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för neuro- och inflammationsvetenskap. Snekkersten, Eriksholm Research Centre.
    Lunner, Thomas
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten. Linköpings universitet, Institutet för handikappvetenskap (IHV). Snekkersten, Oticon A/S, Eriksholm Research Centre.
    Vestergaard, Martin
    University of Cambridge, Centre for the Neural Basis of Hearing.
    Sundewall Thorén, Elisabet
    Snekkersten, Eriksholm Research Centre.
    Normative Reading Span Data from 283 Hearing Aid Users and the Relationship to Performance in Speech-in-Noise Test2014Inngår i: International Journal of Audiology, ISSN 1499-2027, E-ISSN 1708-8186Artikkel i tidsskrift (Fagfellevurdert)
  • 22.
    Borch Petersen, Eline
    et al.
    Linköpings universitet, Medicinska fakulteten. Linköpings universitet, Institutet för handikappvetenskap (IHV). Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för Logopedi, Audiologi och Otorhinolaryngologi. Eriksholm Research Centre.
    Wöstmann, Malte
    Department of Psychology, University of Lübeck, Lübeck, Germany.
    Obleser, Jonas
    Department of Psychology, University of Lübeck, Lübeck, Germany.
    Lunner, Thomas
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för Logopedi, Audiologi och Otorhinolaryngologi. Linköpings universitet, Medicinska fakulteten. Linköpings universitet, Institutet för handikappvetenskap (IHV). Eriksholm Research Centre, Snekkersten, Denmark.
    Neural tracking of attended versus ignored speech is differentially affected by hearing loss2017Inngår i: Journal of Neurophysiology, ISSN 0022-3077, E-ISSN 1522-1598, Vol. 117, nr 1, s. 18-27Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Hearing loss manifests as a reduced ability to understand speech, particularly in multitalker situations. In these situations, younger normal-hearing listeners' brains are known to track attended speech through phase-locking of neural activity to the slow-varying envelope of the speech. This study investigates how hearing loss, compensated by hearing aids, affects the neural tracking of the speech-onset envelope in elderly participants with varying degree of hearing loss (n = 27, 62–86 yr; hearing thresholds 11–73 dB hearing level). In an active listening task, a to-be-attended audiobook (signal) was presented either in quiet or against a competing to-be-ignored audiobook (noise) presented at three individualized signal-to-noise ratios (SNRs). The neural tracking of the to-be-attended and to-be-ignored speech was quantified through the cross-correlation of the electroencephalogram (EEG) and the temporal envelope of speech. We primarily investigated the effects of hearing loss and SNR on the neural envelope tracking. First, we found that elderly hearing-impaired listeners' neural responses reliably track the envelope of to-be-attended speech more than to-be-ignored speech. Second, hearing loss relates to the neural tracking of to-be-ignored speech, resulting in a weaker differential neural tracking of to-be-attended vs. to-be-ignored speech in listeners with worse hearing. Third, neural tracking of to-be-attended speech increased with decreasing background noise. Critically, the beneficial effect of reduced noise on neural speech tracking decreased with stronger hearing loss. In sum, our results show that a common sensorineural processing deficit, i.e., hearing loss, interacts with central attention mechanisms and reduces the differential tracking of attended and ignored speech.

  • 23.
    Bramsløw, Lars
    et al.
    Oticon A/S, Kongebakken, Smørum, Denmark.
    Eneroth, Karin
    Oticon A/S, Kongebakken, Smørum, Denmark.
    Lunner, Thomas
    Eriksholm Research Centre, Oticon A/S, Snekkersten, Denmark.
    Schulte, Michael
    Hörzentrum, Oldenburg, Germany.
    Individual hearing aid performance for equal hearing loss in simple and complex listening situations and its relation to various screening measures2012Konferansepaper (Annet vitenskapelig)
    Abstract [en]

    IntroductionFor some time now it has been acknowledged that there isa link between speech performance in noise, benefit fromamplification and DSP features and non-auditory factors,such as cognitive skills. [Humes, Lunner].The present study aims at 1) confirming this claim and 2)looking directly at the benefit of directionality in a complexfrontal listening task depending on the individual skills asassessed by a number of screening measures.

  • 24.
    Brännström, Jonas K
    et al.
    Linköpings universitet, Filosofiska fakulteten. Dept of clinical science, Section of Logopedics, Phoiatrics and audiology, Lund University, Sweden.
    Öberg, Marie
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för neuro- och inflammationsvetenskap. Linköpings universitet, Medicinska fakulteten. Region Östergötland, Sinnescentrum, Öron- näsa- och halskliniken US.
    Ingo, Elisabeth
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten.
    Månsson, Kristoffer N. T.
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Psykologi. Linköpings universitet, Filosofiska fakulteten.
    Andersson, Gerhard
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Psykologi. Linköpings universitet, Filosofiska fakulteten. Karolinska Institute, Sweden.
    Lunner, Thomas
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten. Linköpings universitet, Institutet för handikappvetenskap (IHV). Eriksholm Research Centre, Oticon A/S, Denmark.
    Laplante-Lévesque, Ariane
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten. Eriksholm Research Centre, Oticon A/S, Denmark.
    The Process of Developing an Internet-Based Support System for Audiologists and First-Time Hearing Aid Clients2015Inngår i: American Journal of Audiology, ISSN 1059-0889, E-ISSN 1558-9137, Vol. 24, nr 3, s. 320-324Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Background: In audiologic practice, complementary information sources and access to the clinician between appointments improve information retention and facilitate adjustment behaviors. An Internet-based support system is a novel way to support information sharing and clinician access. Purpose: This research forum article describes the process of developing an Internet-based support system for audiologists and their first-time hearing aid clients. Method: The iterative development process, including revisions by 4 research audiologists and 4 clinical audiologists, is described. The final system is exemplified. Conclusion: An Internet-based support system was successfully developed for audiologic practice.

  • 25.
    Brännström, Jonas
    et al.
    Clinical Sciences Lund, Sweden.
    Öberg, Marie
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för neuro- och inflammationsvetenskap. Östergötlands Läns Landsting, Sinnescentrum, Öron- näsa- och halskliniken US. Linköpings universitet, Medicinska fakulteten.
    Ingo, Elisabeth
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten.
    Månsson, Kristoffer N T
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Psykologi. Linköpings universitet, Filosofiska fakulteten.
    Andersson, Gerhard
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Psykologi. Linköpings universitet, Filosofiska fakulteten. Karolinska Institutet, Department of Clinical Neuroscience, Sweden.
    Lunner, Thomas
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten. Linköpings universitet, Institutet för handikappvetenskap (IHV). Snekkersten, Oticon A/S, Eriksholm Research Centre, Denmark.
    Laplante-Lévesque, Ariane
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten. Snekkersten, Oticon A/S, Eriksholm Research Centre, Denmark.
    The initial evaluation of an internet-based support system for audiologists and first-time hearing aid clientsThe process of developing an internet-based support system for audiologists and first-time hearing aid clients2016Inngår i: Internet Interventions, ISSN 2214-7829, Vol. 4, nr 1, s. 82-91Artikkel i tidsskrift (Fagfellevurdert)
  • 26.
    Bünsow Boldt, Jesper
    et al.
    Aalborg University, Denmark; Oticon A/S, Smørum, Denmark.
    Kjems, Ulrik
    Oticon A/S, Smørum, Denmark.
    Syskind Pedersen, Michael
    Oticon A/S, Smørum, Denmark.
    Lunner, Thomas
    Oticon Research Centre Eriksholm, Snekkersten, Denmark.
    Wang, DeLiang
    Ohio State University, Columbus, USA.
    Estimation of the Ideal Binary Mask using Directional Systems2008Konferansepaper (Annet vitenskapelig)
    Abstract [en]

    The ideal binary mask is often seen as a goal for time-frequencymasking algorithms trying to increase speech intelligibility, but therequired availability of the unmixed signals makes it difficult to calculatethe ideal binary mask in any real-life applications. In thispaper we derive the theory and the requirements to enable calculationsof the ideal binary mask using a directional system without theavailability of the unmixed signals. The proposed method has a lowcomplexity and is verified using computer simulation in both idealand non-ideal setups showing promising results.Index Terms— Time-Frequency Masking, Directional systems,Ideal Binary Mask, Speech Intelligibility, Sound separation

  • 27.
    C. Manchaiah, Vinaya K.
    et al.
    Linköpings universitet, Institutionen för beteendevetenskap och lärande. Linköpings universitet, Filosofiska fakulteten.
    Rönnberg, Jerker
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Institutet för handikappvetenskap (IHV). Linköpings universitet, Filosofiska fakulteten.
    Andersson, Gerhard
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Psykologi. Linköpings universitet, Filosofiska fakulteten.
    Lunner, Thomas
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten.
    Stages of change in adults noticing hearing difficulties but not using hearing aidsManuskript (preprint) (Annet vitenskapelig)
    Abstract [en]

    Objective: The aim of the current study was to investigate health behaviour change characteristics based on the transtheoretical stages-of-change model in adults noticing hearing difficulties but not using hearing aids using the University of Rhode Island Change Assessment (URICA) scale.

    Design: The study employed a cross-sectional design.

    Study Sample: The study was conducted in United Kingdom and 90 pre-clinical participants completed URICA as well as measures of self-reported hearing disability, self-reported anxiety and depression, self-reported hearing disability acceptance and also provided some demographic details online.

    Results: As predicted, the results indicate that a high percentage of participants (over 90%) were in the contemplation and preparation stages. This was in contrast to a previous study, which included participants attending audiology clinic, where most participants (about 80%) were in the action stage (Laplante-Lévesque et al., 2013). In addition, statistically significant differences were observed in terms of readiness to change composite and committed action composite between the study samples in the current and the previous study.

    Conclusions: Study results support the stages-of-change model. In addition, implications of the current study and areas for future research are discussed.

  • 28.
    Classon, Elisabet
    et al.
    Linköpings universitet, Institutet för handikappvetenskap (IHV). Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten.
    Ng, Hoi Ning Elaine
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Institutet för handikappvetenskap (IHV). Linköpings universitet, Filosofiska fakulteten. Linnaeus Centre HEAD.
    Arlinger, Stig
    Linköpings universitet, Institutet för handikappvetenskap (IHV). Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för neurovetenskap. Linköpings universitet, Hälsouniversitetet.
    Kilman, Lisa
    Linköpings universitet, Institutet för handikappvetenskap (IHV). Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten.
    Larsby, Birgitta
    Linköpings universitet, Institutet för handikappvetenskap (IHV). Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för neurovetenskap. Linköpings universitet, Hälsouniversitetet.
    Lyxell, Björn
    Linköpings universitet, Institutet för handikappvetenskap (IHV). Östergötlands Läns Landsting, Sinnescentrum, Öron- näsa- och halskliniken US. Linköpings universitet, Hälsouniversitetet.
    Lunner, Thomas
    Linköpings universitet, Institutet för handikappvetenskap (IHV). Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten.
    Mishra, Sushmit
    Linköpings universitet, Institutet för handikappvetenskap (IHV). Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten.
    Rudner, Mary
    Linköpings universitet, Institutet för handikappvetenskap (IHV). Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten.
    Rönnberg, Jerker
    Linköpings universitet, Institutet för handikappvetenskap (IHV). Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten.
    Reading span performance in 339 Swedish 50-89 year old individuals with hearing impairment: Effects of test version and age, and relation to speech recognition in noise2013Manuskript (preprint) (Annet vitenskapelig)
    Abstract [en]

    The Swedish reading span test (Rönnberg, Lyxell, Arlinger, & Kinnefors, 1989) is often used to assess working memory capacity (WMC) in the field of cognitive hearing science. The test has proven useful as a predictor of speech recognition in noise in adverse conditions. It has been used in a wide range of experimental studies and has been translated to several languages. The purpose of this paper was to provide reference data for the Swedish reading span test (Rönnberg et al., 1989) in a large sample of adults with hearing impairment aged 50-89 years that are representative of patients seeking rehabilitation at audiological clinics. Data from finished and ongoing projects were collated and reanalyzed for this purpose. The original full version and a shortened version of the test were compared, in terms of percentage correct. In addition, performance on the full version was compared across two different age-cohorts, 50-69 year olds and 70-89 year olds. Frequency distributions and percentile scores are reported, as well as relations with demographic variables, and speech recognition in noise. Results showed that reading span performance was related to age, but not sex, with lower scores in older participants. Pure tone hearing thresholds accounted for a small but significant amount of the variance such that higher reading span scores were related to better hearing. The frequency distributions of scores did not differ across the two versions of the test, but the long version seemed to be more sensitive to age. Performance in both versions was significantly correlated with speech recognition in noise. Regression analyses however showed that reading span explained additional variance in speech in noise recognition, after the effects of age and pure tone hearing thresholds were accounted for, only in the 50-69 year olds. These findings are discussed in relation to  age-related differences in the ability to recruit cognitive resources in the service of speech communication.

  • 29. Durrant, JD
    et al.
    Palmer, CV
    Lunner, Thomas
    Linköpings universitet, Hälsouniversitetet. Linköpings universitet, Institutionen för nervsystem och rörelseorgan, Teknisk audiologi.
    Analysis of counted behaviors in a single-subject design: Modeling of hearing-aid intervention in hearing-impaired patients with Alzheimer's disease2005Inngår i: International Journal of Audiology, ISSN 1499-2027, E-ISSN 1708-8186, Vol. 44, nr 1, s. 31-38Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Clinical procedures related to patients with Alzheimer's Disease (AD) largely fail to address the patient's hearing. Given the challenges of this population, unconventional indicators of treatment efficacy may be required. Palmer et al (1999) reported on caregiver-tracked behaviors as outcome measures for hearing aid intervention. Using these data, hearing aid use and subsequent behavior was modeled as a first-order dynamic system, characterized by responses following an exponential time course. The results of such modeling suggest predictable outcomes of hearing aid intervention, or at least useful parameters of quantification (e.g. time-constant and steady-state response), permitting critical assessment of effects of intervention on negative behaviors versus hearing aid use, comparisons among behaviors, and/or comparisons of hearing-aid-use patterns and behavior counts among patients. Use in this and other difficult-to-test populations warrant further study to evaluate clinical efficacy of the analysis described. © 2005 British Society of Audiology, International Society of Audiology, and Nordic Audiological Society.

  • 30.
    Ellis, Rachel
    et al.
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten.
    Molander, Peter
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten.
    Rönnberg, Jerker
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten.
    Lyxell, Björn
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten.
    Andersson, Gerhard
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Psykologi. Linköpings universitet, Filosofiska fakulteten. Karolinska Institutet, Department of Clinical Neuroscience.
    Lunner, Thomas
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten. Snekkersten, Oticon A/S, Eriksholm Research Centre.
    Predicting speech-in-noise perception using the trail making task: Results from a large-scale internet study2015Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The purpose of this study was to investigate the utility of an internet-based version of the trail making test (TMT) to predict performance on a speech-in-noise perception task. Computerised versions of the tests were completed, via the internet, by a large (1500+) sample of listeners aged between 18 and 91 years old, both with and without hearing loss. The results show that better performance on both the simple and complex versions of the TMT are associated with better speech-in-noise recognition scores. The findings suggest that the relation between performance in the TMT and speech recognition test may be due to the capacity of the TMT to index perceptual speed, as opposed to the more complex cognitive abilities also implicated in TMT performance.

  • 31.
    Ellis, Rachel
    et al.
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten.
    Molander, Peter
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten.
    Rönnberg, Jerker
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten.
    Lyxell, Björn
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten.
    Andersson, Gerhard
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten. Department of Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden..
    Lunner, Thomas
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten. Eriksholm Research Centre, Oticon A/S, Snekkersten, Denmark..
    Predicting Speech-in-Noise Recognition from Performance on the Trail Making Test: Results from a Large-Scale Internet Study2016Inngår i: Ear and Hearing, ISSN 0196-0202, E-ISSN 1538-4667, Vol. 37, nr 1, s. 73-79Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Objective: The aim of the study was to investigate the utility of an internet-based version of the trail making test (TMT) to predict performance on a speech-in-noise perception task.

    Design: Data were taken from a sample of 1509 listeners aged between 18 and 91 years old. Participants completed computerized versions of the TMT and an adaptive speech-in-noise recognition test. All testing was conducted via the internet.

    Results: The results indicate that better performance on both the simple and complex subtests of the TMT are associated with better speech-in-noise recognition scores. Thirty-eight percent of the participants had scores on the speech-in-noise test that indicated the presence of a hearing loss.

    Conclusions: The findings suggest that the TMT may be a useful tool in the assessment, and possibly the treatment, of speech-recognition difficulties. The results indicate that the relation between speech-in-noise recognition and TMT performance relates both to the capacity of the TMT to index processing speed and to the more complex cognitive abilities also implicated in TMT performance.

  • 32.
    Ellis, Rachel
    et al.
    Linköpings universitet, Institutet för handikappvetenskap (IHV). Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten.
    Molander, Peter
    Linköpings universitet, Institutet för handikappvetenskap (IHV). Linköpings universitet, Institutionen för beteendevetenskap och lärande. Linköpings universitet, Filosofiska fakulteten.
    Rönnberg, Jerker
    Linköpings universitet, Institutet för handikappvetenskap (IHV). Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten.
    Lyxell, Björn
    Linköpings universitet, Institutet för handikappvetenskap (IHV). Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten.
    Andersson, Gerhard
    Linköpings universitet, Institutet för handikappvetenskap (IHV). Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten. Department of Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden.
    Lunner, Thomas
    Linköpings universitet, Institutet för handikappvetenskap (IHV). Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten. Linköpings universitet, Institutionen för klinisk och experimentell medicin. Eriksholm Research Centre, Snekkersten, Denmark.
    Predicting Speech-in-Noise Recognition from Performance on the Trail Making Test: Results from a Large-Scale Internet Study2013Konferansepaper (Fagfellevurdert)
  • 33.
    Favre-Felix, Antoine
    et al.
    Eriksholm Res Ctr, Denmark; Tech Univ Denmark, Denmark.
    Graversen, Carina
    Eriksholm Res Ctr, Denmark.
    Bhuiyan, Tanveer A.
    Eriksholm Res Ctr, Denmark.
    Skoglund, Martin
    Linköpings universitet, Institutionen för systemteknik, Reglerteknik. Linköpings universitet, Tekniska fakulteten. Eriksholm Res Ctr, Denmark.
    Rotger-Griful, Sergi
    Eriksholm Res Ctr, Denmark.
    Rank, Mike Lind
    UNEEG Med AS, Denmark.
    Dau, Torsten
    Tech Univ Denmark, Denmark.
    Lunner, Thomas
    Linköpings universitet, Institutionen för systemteknik, Reglerteknik. Linköpings universitet, Tekniska fakulteten. Linköpings universitet, Institutet för handikappvetenskap (IHV). Eriksholm Res Ctr, Denmark; Tech Univ Denmark, Denmark.
    Absolute Eye Gaze Estimation With Biosensors in Hearing Aids2019Inngår i: Frontiers in Neuroscience, ISSN 1662-4548, E-ISSN 1662-453X, FRONTIERS IN NEUROSCIENCE, Vol. 13, artikkel-id 1294Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    People with hearing impairment typically have difficulties following conversations in multi-talker situations. Previous studies have shown that utilizing eye gaze to steer audio through beamformers could be a solution for those situations. Recent studies have shown that in-ear electrodes that capture electrooculography in the ear (EarEOG) can estimate the eye-gaze relative to the head, when the head was fixed. The head movement can be estimated using motion sensors around the ear to create an estimate of the absolute eye-gaze in the room. In this study, an experiment was designed to mimic a multi-talker situation in order to study and model the EarEOG signal when participants attempted to follow a conversation. Eleven hearing impaired participants were presented speech from the DAT speech corpus (Bo Nielsen et al., 2014), with three targets positioned at -30 degrees, 0 degrees and +30 degrees azimuth. The experiment was run in two setups: one where the participants had their head fixed in a chinrest, and the other where they were free to move their head. The participants task was to focus their visual attention on an LED-indicated target that changed regularly. A model was developed for the relative eye-gaze estimation, taking saccades, fixations, head movement and drift from the electrode-skin half-cell into account. This model explained 90.5% of the variance of the EarEOG when the head was fixed, and 82.6% when the head was free. The absolute eye-gaze was also estimated utilizing that model. When the head was fixed, the estimation of the absolute eye-gaze was reliable. However, due to hardware issues, the estimation of the absolute eye-gaze when the head was free had a variance that was too large to reliably estimate the attended target. Overall, this study demonstrated the potential of estimating absolute eye-gaze using EarEOG and motion sensors around the ear.

  • 34.
    Favre-Felix, Antoine
    et al.
    Eriksholm Res Ctr, Denmark; Danish Tech Univ, Denmark.
    Graversen, Carina
    Eriksholm Res Ctr, Denmark.
    Hietkamp, Renskje K.
    Eriksholm Res Ctr, Denmark.
    Dau, Torsten
    Danish Tech Univ, Denmark.
    Lunner, Thomas
    Linköpings universitet, Institutionen för systemteknik, Reglerteknik. Linköpings universitet, Tekniska fakulteten. Linköpings universitet, Institutet för handikappvetenskap (IHV). Eriksholm Res Ctr, Denmark; Danish Tech Univ, Denmark.
    Improving Speech Intelligibility by Hearing Aid Eye-Gaze Steering: Conditions With Head Fixated in a Multitalker Environment2018Inngår i: TRENDS IN HEARING, ISSN 2331-2165, Vol. 22, artikkel-id 2331216518814388Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The behavior of a person during a conversation typically involves both auditory and visual attention. Visual attention implies that the person directs his or her eye gaze toward the sound target of interest, and hence, detection of the gaze may provide a steering signal for future hearing aids. The steering could utilize a beamformer or the selection of a specific audio stream from a set of remote microphones. Previous studies have shown that eye gaze can be measured through electrooculography (EOG). To explore the precision and real-time feasibility of the methodology, seven hearing-impaired persons were tested, seated with their head fixed in front of three targets positioned at -30 degrees, 0 degrees, and +30 degrees azimuth. Each target presented speech from the Danish DAT material, which was available for direct input to the hearing aid using head-related transfer functions. Speech intelligibility was measured in three conditions: a reference condition without any steering, a condition where eye gaze was estimated from EOG measures to select the desired audio stream, and an ideal condition with steering based on an eye-tracking camera. The "EOG-steering" improved the sentence correct score compared with the "no-steering" condition, although the performance was still significantly lower than the ideal condition with the eye-tracking camera. In conclusion, eye-gaze steering increases speech intelligibility, although real-time EOG-steering still requires improvements of the signal processing before it is feasible for implementation in a hearing aid.

  • 35.
    Fiedler, Lorenz
    et al.
    University of Lübeck, Auditory Cognition.
    Lunner, Thomas
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten. Linköpings universitet, Institutet för handikappvetenskap (IHV). Snekkersten, Oticon A/S, Eriksholm Research Centre.
    Brandmeyer, Alex
    Max Planck Institute for Cognitive and Brain Sciences.
    Wöstmann, Malte
    University of Lübeck, Auditory Cognition.
    Graversen, Carina
    Snekkersten, Oticon A/S, Eriksholm Research Centre.
    Obleser, Jonas
    University of Lübeck, Auditory Cognition.
    In-Ear-EEG indicates neural signatures of effortful auditory processing2015Konferansepaper (Annet vitenskapelig)
  • 36.
    Fiedler, Lorenz
    et al.
    University of Lübeck, Auditory Cognition.
    Lunner, Thomas
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten. Linköpings universitet, Institutet för handikappvetenskap (IHV). Snekkersten, Oticon A/S, Eriksholm Research Centre.
    Wöstmann, Malte
    University of Lübeck, Auditory Cognition.
    Graversen, Carina
    Snekkersten, Oticon A/S, Eriksholm Research Centre.
    Obleser, Jonas
    University of Lübeck, Auditory Cognition.
    In-Ear-EEG indicates neural signatures of effortful auditory processing2015Konferansepaper (Annet vitenskapelig)
  • 37. Flynn, Mark C
    et al.
    Lunner, Thomas
    Linköpings universitet, Hälsouniversitetet. Linköpings universitet, Institutionen för nervsystem och rörelseorgan, Teknisk audiologi.
    Clinical verification of a hearing aid with artificial intelligence2005Inngår i: Hearing journal, ISSN 0745-7472, Vol. 58, s. 34-38Artikkel i tidsskrift (Fagfellevurdert)
  • 38.
    Foo, Catharina
    et al.
    Linköpings universitet, Institutet för handikappvetenskap (IHV).
    Lunner, Thomas
    Linköpings universitet, Hälsouniversitetet. Linköpings universitet, Institutionen för klinisk och experimentell medicin, Teknisk audiologi.
    Rudner, Mary
    Linköpings universitet, Filosofiska fakulteten. Linköpings universitet, Institutionen för beteendevetenskap och lärande, Avdelningen för kognition, utveckling och handikapp (CDD).
    Rönnberg, Jerker
    Linköpings universitet, Filosofiska fakulteten. Linköpings universitet, Institutet för handikappvetenskap (IHV). Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap.
    Speech recognition in noise and perceived effort2008Inngår i: The HEAD Graduate School First Summer Workshop June 9–10, 2008, Vårdnäs Stiftsgård, Rimforsa, Sweden, Linköping: IBL, Linköpings universitet , 2008, s. 20-20Konferansepaper (Annet vitenskapelig)
  • 39.
    Foo, Catharina
    et al.
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten. Linköpings universitet, Institutet för handikappvetenskap (IHV).
    Rudner, Mary
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten. Linköpings universitet, Institutet för handikappvetenskap (IHV).
    Rönnberg, Jerker
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten. Linköpings universitet, Institutet för handikappvetenskap (IHV).
    Lunner, Thomas
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten. Linköpings universitet, Institutet för handikappvetenskap (IHV). Centre Eriksholm, Snekkersten, Denmark.
    Recognition of speech in noise with new hearing instrument compression release settings requires explicit cognitive storage and processing capacity2007Inngår i: Journal of the American Academy of Audiology, ISSN 1050-0545, Vol. 18, nr 7, s. 618-631Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Evidence suggests that cognitive capacity predicts the ability to benefit from specific compression release settings in non-linear digital hearing instruments. Previous studies have investigated the predictive value of various cognitive tests in relation to aided speech recognition in noise using compression release settings that have been experienced for a certain period. However, the predictive value of cognitive tests with new settings, to which the user has not had the opportunity to become accustomed, has not been studied. In the present study, we compare the predictive values of two cognitive tests, reading span and letter monitoring, in relation to aided speech recognition in noise for 32 habitual hearing instrument users using new compression release settings. We found that reading span was a strong predictor of speech recognition in noise with new compression release settings. This result generalizes previous findings for experienced test settings to new test settings, for both speech recognition in noise tests used in the present study, Hagerman sentences and HINT. Letter monitoring, on the other hand, was not found to be a strong predictor of speech recognition in noise with new compression release settings. 

  • 40.
    Hellgren, Johan
    et al.
    Linköpings universitet, Hälsouniversitetet. Linköpings universitet, Institutionen för nervsystem och rörelseorgan, Teknisk audiologi.
    Lunner, Thomas
    Linköpings universitet, Hälsouniversitetet. Linköpings universitet, Institutionen för nervsystem och rörelseorgan, Teknisk audiologi.
    Arlinger, Stig
    Linköpings universitet, Hälsouniversitetet. Linköpings universitet, Institutionen för nervsystem och rörelseorgan, Teknisk audiologi.
    System identification of feedback in hearing aids.1999Inngår i: Journal of the Acoustical Society of America, ISSN 0001-4966, E-ISSN 1520-8524, Vol. 105, s. 3481-3496Artikkel i tidsskrift (Fagfellevurdert)
  • 41.
    Hellgren, Johan
    et al.
    Linköpings universitet, Hälsouniversitetet. Linköpings universitet, Institutionen för nervsystem och rörelseorgan, Teknisk audiologi.
    Lunner, Thomas
    Linköpings universitet, Hälsouniversitetet. Linköpings universitet, Institutionen för nervsystem och rörelseorgan, Teknisk audiologi.
    Arlinger, Stig
    Linköpings universitet, Hälsouniversitetet. Linköpings universitet, Institutionen för nervsystem och rörelseorgan, Teknisk audiologi.
    Variations in the feedback of hearing aids.1999Inngår i: Journal of the Acoustical Society of America, ISSN 0001-4966, E-ISSN 1520-8524, Vol. 106, s. 2821-2833Artikkel i tidsskrift (Fagfellevurdert)
  • 42.
    Hietkamp, Renskje K
    et al.
    Eriksholm Research Centre, Oticon A/S, Snekkersten, Denmark.
    Andersen, Martin
    Eriksholm Research Centre, Oticon A/S, Snekkersten, Denmark.
    Kristensen, Michael S
    Eriksholm Research Centre, Oticon A/S, Snekkersten, Denmark.
    Pontoppidan, Niels H
    Eriksholm Research Centre, Oticon A/S, Snekkersten, Denmark.
    Lunner, Thomas
    Eriksholm Research Centre, Oticon A/S, Snekkersten, Denmark.
    The TFS1-test reveals mild hearing loss2010Konferansepaper (Annet vitenskapelig)
  • 43.
    Hietkamp, Renskje K.
    et al.
    Eriksholm Research Centre, Oticon A/S, Snekkersten, Denmark.
    Andersen, Martin R.Eriksholm Research Centre, Oticon A/S, Snekkersten, Denmark.Lunner, ThomasEriksholm Research Centre, Oticon A/S, Snekkerste.
    Perceptual audio evaluation by hearing-impaired listeners – some considerations on task training2010Konferanseproceedings (Fagfellevurdert)
  • 44.
    Holmberg, M.
    et al.
    Eriksholm Research Centre, Oticon A/S, Snekkersten, Denmark.
    Andersen, JH
    riksholm Research Centre, Oticon A/S, Snekkersten, Denmark.
    Simonsen, CS
    riksholm Research Centre, Oticon A/S, Snekkersten, Denmark.
    Lunner, Thomas
    riksholm Research Centre, Oticon A/S, Snekkersten, Denmark.
    Creating and validating a Danish Acceptable Noise Level test2010Konferansepaper (Annet vitenskapelig)
  • 45.
    Ingo, Elisabeth
    et al.
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten. Linköpings universitet, Institutet för handikappvetenskap (IHV).
    Brännström, K Jonas
    Linköpings universitet, Institutet för handikappvetenskap (IHV). Linköpings universitet, Institutionen för beteendevetenskap och lärande. Linköpings universitet, Filosofiska fakulteten. Department of Logopedics, Phoniatrics and Audiology, Lund University, Sweden.
    Andersson, Gerhard
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Psykologi. Linköpings universitet, Filosofiska fakulteten. Linköpings universitet, Institutet för handikappvetenskap (IHV). Department of Clinical Neuroscience, Karolinska Institute, Sweden; Eriksholm Research Centre, Oticon a/S, Denmark.
    Lunner, Thomas
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten. Linköpings universitet, Institutet för handikappvetenskap (IHV). Eriksholm Research Centre, Oticon a/S, Denmark.
    Laplante-Lévesque, Ariane
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten. Linköpings universitet, Institutet för handikappvetenskap (IHV). Eriksholm Research Centre, Oticon a/S, Denmark.
    Measuring motivation using the transtheoretical (stages of change) model: A follow-up study of people who failed an online hearing screening.2016Inngår i: International Journal of Audiology, ISSN 1499-2027, E-ISSN 1708-8186, Vol. 55, nr Suppl 3, s. S52-S58Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    OBJECTIVE: Acceptance and readiness to seek professional help have shown to be important factors for favourable audiological rehabilitation outcomes. Theories from health psychology such as the transtheoretical (stages-of-change) model could help understand behavioural change in people with hearing impairment. In recent studies, the University of Rhode Island change assessment (URICA) has been found to have good predictive validity.

    DESIGN: In a previous study, 224 Swedish adults who had failed an online hearing screening completed URICA and two other measures of stages of change. This follow-up aimed to: (1) determine prevalence of help-seeking at a hearing clinic and hearing aid uptake, and (2) explore the predictive validity of the stages of change measures by a follow-up on the 224 participants who had failed a hearing screening 18 months previously.

    STUDY SAMPLE: A total of 122 people (54%) completed the follow-up online questionnaire, including the three measures and questions regarding experience with hearing help-seeking and hearing aid uptake.

    RESULTS: Since failing the online hearing screening, 61% of participants had sought help. A good predictive validity for a one-item measure of stages of change was reported.

    CONCLUSIONS: The Staging algorithm was the stages of change measure with the best ability to predict help-seeking 18 months later.

  • 46.
    Ingo, Elisabeth
    et al.
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten.
    Brännström, K. Jonas
    Department of logopedics, phoniatrics and audiology, Lund University, Sweden and Institutet för handikappvetenskap (IHV), The Swedish Institute for Disability Research.
    Andersson, Gerhard
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Psykologi. Linköpings universitet, Filosofiska fakulteten.
    Lunner, Thomas
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten. Linköpings universitet, Institutet för handikappvetenskap (IHV). Oticon AS, Denmark.
    Laplante-Lévesque, Ariane
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten. Oticon AS, Denmark.
    Stages of change in audiology: comparison of three self-assessment measures2017Inngår i: International Journal of Audiology, ISSN 1499-2027, E-ISSN 1708-8186, Vol. 56, nr 7, s. 516-520Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Objective: In a clinical setting, theories of health behaviour change could help audiologists and other hearing health care professionals understand the barriers that prevent people with hearing problems to seek audiological help. The transtheoretical (stages of change) model of health behaviour change is one of these theories. It describes a persons journey towards health behaviour change (e.g. seeking help or taking up rehabilitation) in separate stages: precontemplation, contemplation, preparation, action, and, finally, maintenance. A short self-assessment measure of stages of change may guide the clinician and facilitate first appointments. This article describes correlations between three stages of change measures of different lengths, one 24-item and two one-item. Design: Participants were recruited through an online hearing screening study. Adults who failed the speech-in-noise recognition screening test and who had never undergone a hearing aid fitting were invited to complete further questionnaires online, including the three stages of change measures. Study sample: In total, 224 adults completed the three measures. Results: A majority of the participants were categorised as being in one of the information- and help-seeking stage of change (contemplation or preparation). The three stages of change measures were significantly correlated. Conclusions Our results support further investigating the use of a one-item measure to determine stages of change in people with hearing impairment.

  • 47.
    Jensen, Josefine Juul
    et al.
    Univ Copenhagen, Denmark; Oticon AS, Denmark.
    Callaway, Susanna L.
    Oticon AS, Denmark.
    Lunner, Thomas
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten. Linköpings universitet, Institutet för handikappvetenskap (IHV). Orebro Univ, Sweden; Eriksholm Res Ctr, Denmark.
    Wendt, Dorothea
    Eriksholm Res Ctr, Denmark; Tech Univ Denmark, Denmark.
    Measuring the Impact of Tinnitus on Aided Listening Effort Using Pupillary Response2018Inngår i: TRENDS IN HEARING, ISSN 2331-2165, Vol. 22, artikkel-id 2331216518795340Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Tinnitus can have serious impact on a persons life and is a common auditory symptom that is especially comorbid with hearing loss. This study investigated processing effort required for speech recognition in a group of hearing-impaired people with tinnitus and a control group (CG) of hearing-impaired people without tinnitus by means of pupillary response. Furthermore, the relationship between the pupillary response, self-rating measures of tinnitus severity, and fatigue was examined. Participants performed a speech-in-noise task with a competing four-talker babble at two speech intelligibility levels (50% and 95%) with either an active or inactive noise-reduction scheme while the pupillary response was recorded. Tinnitus participants showed significantly smaller time-dependent pupil dilations and significantly higher fatigue ratings. No correlation was found for the tinnitus severity and pupillary response, but a significant correlation was found between the tinnitus severity and fatigue. As participants with tinnitus generally reported higher fatigue and showed smaller task-evoked pupil dilations, it was speculated that this may suggest an increased activity of the parasympathetic nervous system, which governs the bodily response during rest. The finding that tinnitus participants showed higher fatigue has clinical implications, highlighting the importance of taking steps to decrease the risk of developing long-term fatigue. Finally, the tinnitus participants showed reduced pupillary responses when noise reduction was activated, suggesting a reduced effort from hearing aid signal processing.

  • 48.
    Kjems, Ulrik
    et al.
    Oticon A/S, Kongebakken 9, DK-2765 Smørum, Denmark.
    Boldt, Jesper B
    Oticon A/S, Kongebakken 9, DK-2765 Smørum, Denmark.
    Pedersen, Michael S
    Oticon A/S, Kongebakken 9, DK-2765 Smørum, Denmark.
    Lunner, Thomas
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten. Linköpings universitet, Institutet för handikappvetenskap (IHV). Oticon Research Centre Eriksholm, Kongevejen 243, DK-3070 Snekkersten, Denmark.
    Wang, DeLiang
    Department of Computer Science and Engineering and Center for Cognitive Science, The Ohio State University, Columbus, Ohio 43210 .
    Role of mask pattern in intelligibility of ideal binary-masked noisy speech2009Inngår i: Acoustical Society of America, ISSN 0001-4966, Vol. 126, nr 3, s. 1415-1426Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Intelligibility of ideal binary masked noisy speech was measured on a group of normal hearing individuals across mixture signal to noise ratio (SNR) levels, masker types, and local criteria for forming the binary mask. The binary mask is computed from time-frequency decompositions of target and masker signals using two different schemes: an ideal binary mask computed by thresholding the local SNR within time-frequency units and a target binary mask computed by comparing the local target energy against the long-term average speech spectrum. By depicting intelligibility scores as a function of the difference between mixture SNR and local SNR threshold, alignment of the performance curves is obtained for a large range of mixture SNR levels. Large intelligibility benefits are obtained for both sparse and dense binary masks. When an ideal mask is dense with many ones, the effect of changing mixture SNR level while fixing the mask is significant, whereas for more sparse masks the effect is small or insignificant.

  • 49.
    Kjems, Ulrik
    et al.
    Oticon AS, Smørum, Denmark .
    Boldt, Jesper B
    Oticon AS, Smørum, Denmark .
    Pedersen, Michael S
    Oticon AS, Smørum, Denmark .
    Lunner, Thomas
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Teknisk audiologi. Linköpings universitet, Hälsouniversitetet. Oticon Research Centre Eriksholm, Snekkersten, Denmark.
    Wang, DeLiang
    Ohio State University, Columbus, USA.
    Role of mask pattern in intelligibility of ideal binary-masked noisy speech2009Inngår i: Journal of the Acoustical Society of America, ISSN 0001-4966, E-ISSN 1520-8524, Vol. 126, nr 3, s. 1415-1426Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Intelligibility of ideal binary masked noisy speech was measured on a group of normal hearing individuals across mixture signal to noise ratio (SNR) levels, masker types, and local criteria for forming the binary mask. The binary mask is computed from time-frequency decompositions of target and masker signals using two different schemes: an ideal binary mask computed by thresholding the local SNR within time-frequency units and a target binary mask computed by comparing the local target energy against the long-term average speech spectrum. By depicting intelligibility scores as a function of the difference between mixture SNR and local SNR threshold, alignment of the performance curves is obtained for a large range of mixture SNR levels. Large intelligibility benefits are obtained for both sparse and dense binary masks. When an ideal mask is dense with many ones, the effect of changing mixture SNR level while fixing the mask is significant, whereas for more sparse masks the effect is small or insignificant.

  • 50.
    Kjems, Ulrik
    et al.
    Oticon Kongebakken 9, 2765 Smørum, Denmark.
    Pedersen, Michael SOticon Kongebakken 9, 2765 Smørum, Denmark.Boldt, Jesper BOticon Kongebakken 9, 2765 Smørum, Denmark.Lunner, ThomasOticon Research Centre Eriksholm Kongevejen 243, 3070 Snekkersten, Denmark.Wang, DeLiangDepartment of Computer Science & Engineering, and Center for Cognitive Science The Ohio State University, Columbus, Ohio 43210, USA.
    Speech intelligibility of ideal binary masked mixtures.2009Konferanseproceedings (Fagfellevurdert)
    Abstract [en]

    An analysis of intelligibility measurements of ideal binary masked speech in noise for a group of normal hearing lis-teners is presented. In the proposed model, speech cues in the processed mixtures are encoded by two information channels: a noisy speech channel and a vocoded noise channel. Results indicate that the former dominates for dense binary mask patterns, and the latter for sparse binary mask patterns, as controlled by a local SNR criterion used for forming the ideal mask. Moreover, speech cues from the target part of the processed mixture may be better utilized by the listeners as a result of the ideal binary masking. Finally, the analysis is extended to show a good qualitative agree-ment with several previous studies of intelligibility of ideal binary masked noisy speech.

123456 1 - 50 of 255
RefereraExporteraLink til resultatlisten
Permanent link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf