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  • 51.
    Nygren, Mariana
    et al.
    Umeå University, Sweden .
    Tyboni, Mikaela
    Umeå University, Sweden .
    Lindstrom, Fredric
    University of Gothenburg, Sweden .
    McAllister, Anita
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Logopedi. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Sinnescentrum, Öron- näsa- och halskliniken US.
    van Doorn, Jan
    Umeå University, Sweden .
    Gender Differences in Childrens Voice Use in a Day Care Environment2012Ingår i: Journal of Voice, ISSN 0892-1997, E-ISSN 1873-4588, Vol. 26, nr 6Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Background. The prevalence of dysphonia is higher in boys than in girls before puberty. This could be because of the differences in boys and girls voice use. Previous research on gender differences in prepubescent childrens voice parameters has been contradictory. Most studies have focused on examining fundamental frequency. Objectives. The purpose of this study was to investigate voice use in boys and girls in a day care environment based on the voice parameters fundamental frequency (Hz), vocal intensity (dB SPL), and phonation time (%) and to ascertain whether there were any significant gender differences. Study Design. Prospective comparative design. Method. The study was conducted in a day care environment where 30 children (17 boys and 13 girls aged 4-5 years) participated. The participants voices were measured continuously for 4 hours with a voice accumulator that registered fundamental frequency, vocal intensity level, phonation time, and background noise. Results. Mean (standard deviation) fundamental frequency was 310 (22) and 321 (16) Hz, vocal intensity was 93 (4) and 91 (3) dB SPL, and phonation time was 7.7 (2.0)% and 7.6 (2.5)% for boys and girls, respectively. No differences between genders were statistically significant. Conclusion. The finding of no statistically significant gender differences for measurements of voice parameters in a group of children aged 4-5 years in a day care environment is an important finding that contributes to increased knowledge about young boys and girls voice use.

  • 52.
    Rayner, Manny
    et al.
    University of Geneva, Switzerland.
    Gerlach, Johanna
    University of Geneva, Switzerland.
    Starlander, Marianne
    University of Geneva, Switzerland.
    Tsourakis, Nikos
    University of Geneva, Switzerland.
    Kruckenberg, Anita
    KTH, Stockholm, Sweden.
    Eklund, Robert
    Linköpings universitet, Institutionen för kultur och kommunikation, Avdelningen för språk och kultur. Linköpings universitet, Filosofiska fakulteten.
    Jönsson, Arne
    Linköpings universitet, Institutionen för datavetenskap, Interaktiva och kognitiva system. Linköpings universitet, Tekniska högskolan.
    McAllister, Anita
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Logopedi. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Sinnescentrum, Öron- näsa- och halskliniken US.
    Chua, Cathy
    Swinburne University, Melbourne, Australia.
    A web-deployed Swedish spoken CALL systembased on a large shared English/Swedish feature grammar2012Ingår i: Proceedings of the SLTC 2012 workshop on NLP for CALL / [ed] Lars Borin and Elena Volodina, Linköping University Electronic Press, 2012, s. 37-46Konferensbidrag (Refereegranskat)
    Abstract [en]

    We describe a Swedish version of CALL-SLT,a web-deployed CALL system that allows beginner/intermediate students to practise generativespoken language skills. Speech recognitionis grammar-based, with language modelsderived, using the Regulus platform, fromsubstantial domain-independent feature grammars.The paper focusses on the Swedishgrammar resources, which were developedby generalising the existing English featuregrammar into a shared grammar for Englishand Swedish. It turns out that this can be donevery economically: all but a handful of rulesand features are shared, and English grammaressentially ends up being treated as a reducedform of Swedish. We conclude by presentinga simple evaluation which compares theSwedish and French versions of CALL-SLT.

  • 53.
    Samuelsson, Christina
    et al.
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Logopedi. Linköpings universitet, Hälsouniversitetet.
    Lundeborg, Inger
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Logopedi. Linköpings universitet, Hälsouniversitetet.
    McAllister, Anita
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Logopedi. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Sinnescentrum, Öron- näsa- och halskliniken US.
    Experiences from Two Swedish Speech and Language Pathology Education Programmes Using Different Approaches to Problem-Based Learning2012Ingår i: Problem-Based Learning in Clinical Education: The Next Generation / [ed] Susan Bridges, Colman McGrath and Tara L. Whitehill, Dordrecht: Springer Netherlands, 2012, s. 47-58Kapitel i bok, del av antologi (Övrigt vetenskapligt)
    Abstract [en]

    In many programmes within higher education, including speech language pathology (SLP) education, students are expected to develop collaborative skills alongside acquisition of theoretical knowledge. The focus of the present chapter is to evaluate SLP graduates’ opinions on how well prepared for the professional life they feel after their education. A questionnaire, focusing on perceived professional skills in relation to education, was distributed to former SLP students from two programmes with different applications of problem-based learning (PBL). A total of 55 students (69%) completed the questionnaire. PBL has been identified as one efficient way to facilitate the development of speech and language pathology students’ abilities to meet the demands of self-directed learning in everyday worklife. Moreover, it has been shown that the use of PBL throughout the programme is beneficial to the perception of attaining general competencies. It is also demonstrated that the students from both the PBL throughout and the semi-PBL curricula rated themselves high on many specific competencies.

  • 54.
    Samuelsson, Christina
    et al.
    Linköpings universitet, Hälsouniversitetet. Linköpings universitet, Institutionen för klinisk och experimentell medicin, Logopedi.
    LundeborgHammarström, Inger
    Linköpings universitet, Hälsouniversitetet. Linköpings universitet, Institutionen för klinisk och experimentell medicin, Logopedi.
    McAllister, Anita
    Linköpings universitet, Hälsouniversitetet. Linköpings universitet, Institutionen för klinisk och experimentell medicin, Logopedi. Östergötlands Läns Landsting, Rekonstruktionscentrum, Öronkliniken US.
    Specific and general competencies of graduates from Swedish speech and language pathology education2008Ingår i: The Second International Conference on PBL in Speech-Language Pathology,2008, 2008Konferensbidrag (Refereegranskat)
    Abstract [en]

      The topic of the present study is the relationship between the pedagogical philosophy of education and the professional outcome, mainly regarding general competencies. The overall purpose of the study is to evaluate postgraduates- opinions on how well prepared for the professional life they feel after their speech and language pathology education. Previous research have shown differences in professional skills between problem-based learning (PBL) and non-PBL graduates (Prince, van Eijs, Boshuzien, van der Vleuten & Scherpbier, 2005). Those differences mainly concern general competencies such as organizational skills and teamwork. These findings get further support from the evaluation of the Swedish medical education programmes, where PBL-graduates report better communicational, co-operational and leadership skills than non-PBL graduates (Grundutbildningsenkäten, 2006). PBL is a student centred pedagogical philosophy where students are encouraged to be very active. In PBL real-life problems become the context in which students learn academic content as well as professional skills (Biggs, 2003). The first Swedish speech language pathology program using PBL throughout the program was completed in 2007, and the graduate students have participated in an evaluation of the program. A comprehensive questionnaire, focusing on perceived professional skills in relation to education, was distributed to the students of this program, to students from a partial PBL curriculum who graduated the same year and to students from a partial PBL curriculum who finished in 2002. Preliminary results indicate that the PBL graduates feel well prepared for meeting the demands of the professional life. The results also suggest that the students who finished their education six years ago feels more able to evaluate their education. These students also seem more satisfied. The present study adds further knowledge concerning outcomes of higher medical education. It also points to differences between PBL graduates and non-PBL graduates regarding professional experiences. The study also provides information on how the opinions of the educational experience changes over time.

  • 55.
    Sodersten, Maria
    et al.
    Karolinska Institute, Sweden; Karolinska University Hospital, Sweden.
    Lais Salomao, Glaucia
    Karolinska Institute, Sweden; KTH Royal Institute Technology, Sweden.
    Mcallister, Anita
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för neuro- och inflammationsvetenskap. Linköpings universitet, Medicinska fakulteten. Karolinska Institute, Sweden; Karolinska University Hospital, Sweden.
    Ternstrom, Sten
    KTH Royal Institute Technology, Sweden.
    Natural Voice Use in Patients With Voice Disorders and Vocally Healthy Speakers Based on 2 Days Voice Accumulator Information From a Database2015Ingår i: Journal of Voice, ISSN 0892-1997, E-ISSN 1873-4588, Vol. 29, nr 5Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Objectives and Study Design. Information about how patients with voice disorders use their voices in natural communicative situations is scarce. Such long-term data have for the first time been uploaded to a central database from different hospitals in Sweden. The purpose was to investigate the potential use of a large set of long-term data for establishing reference values regarding voice use in natural situations. Methods. VoxLog (Sonvox AB, Umea, Sweden) was tested for deployment in clinical practice by speech-language pathologists working at nine hospitals in Sweden. Files from 20 patients (16 females and 4 males) with functional, organic, or neurological voice disorders and 10 vocally healthy individuals (eight females and two males) were uploaded to a remote central database. All participants had vocally demanding occupations and had been monitored for more than 2 days. The total recording time was 681 hours and 50 minutes. Data on fundamental frequency (F0, Hz), phonation time (seconds and percentage), voice sound pressure level (SPL, dB), and background noise level (dB) were analyzed for each recorded day and compared between the 2 days. Variations across each day were measured using coefficients of variation. Results. Average F0, voice SPL, and especially the level of background noise varied considerably for all participants across each day. Average F0 and voice SPL were considerably higher than reference values from laboratory recordings. Conclusions. The use of a remote central database and strict protocols can accelerate data collection from larger groups of participants and contribute to establishing reference values regarding voice use in natural situations and from patients with voice disorders. Information about activities and voice symptoms would supplement the objective data and is recommended in future studies.

  • 56.
    Södersten, Maria
    et al.
    Karolinska Institutet.
    Thorsdotter, Malina
    Karolinska Institutet.
    McAllister, Anita
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Logopedi. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Sinnescentrum, Öron- näsa- och halskliniken US.
    Terström, Sten
    Kungliga Tekniska Högskolan.
    Long-term Measures of Voice Use and Environmental Noise Levels using a Portable Voice Accumulator2011Ingår i: Pan European Voice Conference (PEVOC9), 2011Konferensbidrag (Refereegranskat)
    Abstract [en]

    High vocal demands and speaking in environmental noise have both been identified as risk factors for voice disorders. Long-term field documentation of voice use might provide important information on those factors. The purpose was to explore how long representative measurements need to be, and whether long-term data from the field can usefully supplement voice assessments made in the laboratory. Eight patients diagnosed with occupational voice disorders were chosen consecutively from a waiting list for voice therapy at the Karolinska University Hospital. They were matched to vocally healthy colleagues regarding gender, occupation and work place. The sixteen participants underwent a series of voice assessments in the laboratory: audio recording, voice range profile, laryngostroboscopy, and subjective evaluations using the Voice Handicap Index. A long-term registration during 14 days was performed for each participant using the portable voice accumulator VoxLog. Voxlog has a neck collar with an accelerometer measuring fundamental frequency and phonation time, and a microphone measuring the level of voice intensity and of environmental noise.  The participants wore the Voxlog from morning to night for two full weeks.  They kept a diary of daily activities and rated voice symptoms four times daily. Preliminary results show that data obtained from the first week were similar to data from the second week; and that fundamental frequency and voice intensity were higher in the field than in the laboratory. The results provide a basis for discussion about valid voice outcome measures.

  • 57.
    Tronnier, Mechtild
    et al.
    Linköpings universitet, Filosofiska fakulteten. Linköpings universitet, Institutionen för kultur och kommunikation.
    McAllister, Anita
    Linköpings universitet, Hälsouniversitetet. Linköpings universitet, Institutionen för klinisk och experimentell medicin, Logopedi. Östergötlands Läns Landsting, Rekonstruktionscentrum, Öronkliniken US.
    On vocal drop-out and voice quality in children. Voicing sustainment and voice quality in children2008Ingår i: FONETIK 2008,2008, Göteborg: Göteborg Universitet, Inst Lingvistik , 2008, s. 15-Konferensbidrag (Refereegranskat)
    Abstract [en]

     The present perceptual investigation pursues the question wether the evaluation of a child's voice as hoarse, breathy or hyperfunctional can be correlated to the degree of non-periodical sections in the signal based on the lack of regular oscillations of the vocal folds. The results show that this is not the case: children with clearly hoarse voices produce a stable and measurable fundamental frequency. In addition, children who show a tendency toward unstable fundamental frequency are not evaluated as hoarse, neither breathy nor hyperfunctional.   

  • 58.
    Tukel, Sermin
    et al.
    Karolinska Institute, Sweden.
    Bjorelius, Helena
    Karolinska Institute, Sweden.
    Henningsson, Gunilla
    Karolinska Institute, Sweden.
    Mcallister, Anita
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för neuro- och inflammationsvetenskap. Linköpings universitet, Medicinska fakulteten. Karolinska Institute, Sweden; Karolinska University Hospital, Sweden.
    Christin Eliasson, Ann
    Karolinska Institute, Sweden.
    Motor functions and adaptive behaviour in children with childhood apraxia of speech2015Ingår i: International Journal of Speech-Language Pathology, ISSN 1754-9507, E-ISSN 1754-9515, Vol. 17, nr 5, s. 470-480Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Purpose: Undiagnosed motor and behavioural problems have been reported for children with childhood apraxia of speech (CAS). This study aims to understand the extent of these problems by determining the profile of and relationships between speech/non-speech oral, manual and overall body motor functions and adaptive behaviours in CAS. Method: Eighteen children (five girls and 13 boys) with CAS, 4 years 4 months to 10 years 6 months old, participated in this study. The assessments used were the Verbal Motor Production Assessment for Children (VMPAC), Bruininks-Oseretsky Test of Motor Proficiency (BOT-2) and Adaptive Behaviour Assessment System (ABAS-II). Result: Median result of speech/non-speech oral motor function was between -1 and -2 SD of the mean VMPAC norms. For BOT-2 and ABAS-II, the median result was between the mean and -1 SD of test norms. However, on an individual level, many children had co-occurring difficulties (below -1 SD of the mean) in overall and manual motor functions and in adaptive behaviour, despite few correlations between sub-tests. Conclusion: In addition to the impaired speech motor output, children displayed heterogeneous motor problems suggesting the presence of a global motor deficit. The complex relationship between motor functions and behaviour may partly explain the undiagnosed developmental difficulties in CAS.

  • 59.
    van Ettinger-Veenstra, Helene
    et al.
    Linköpings universitet, Institutionen för medicin och hälsa, Medicinsk radiologi. Linköpings universitet, Hälsouniversitetet. Linköpings universitet, Centrum för medicinsk bildvetenskap och visualisering, CMIV.
    Gauffin, Helena
    Linköpings universitet, Centrum för medicinsk bildvetenskap och visualisering, CMIV. Linköpings universitet, Institutionen för klinisk och experimentell medicin. Linköpings universitet, Hälsouniversitetet.
    McAllister, Anita
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Logopedi. Linköpings universitet, Hälsouniversitetet.
    Lundberg, Peter
    Linköpings universitet, Institutionen för medicin och hälsa, Medicinsk radiofysik. Linköpings universitet, Institutionen för medicin och hälsa, Medicinsk radiologi. Linköpings universitet, Hälsouniversitetet. Linköpings universitet, Centrum för medicinsk bildvetenskap och visualisering, CMIV. Östergötlands Läns Landsting, Centrum för kirurgi, ortopedi och cancervård, Radiofysikavdelningen US.
    Karlsson, Thomas
    Linköpings universitet, Institutionen för beteendevetenskap och lärande.
    Engström, Maria
    Linköpings universitet, Institutionen för medicin och hälsa, Medicinsk radiologi. Linköpings universitet, Hälsouniversitetet. Linköpings universitet, Centrum för medicinsk bildvetenskap och visualisering, CMIV.
    Language deficits in Epilepsy, an fMRI study2012Ingår i:  , 2012Konferensbidrag (Refereegranskat)
  • 60.
    van Ettinger-Veenstra, Helene
    et al.
    Linköpings universitet, Centrum för medicinsk bildvetenskap och visualisering, CMIV. Linköpings universitet, Institutionen för medicin och hälsa, Medicinsk radiologi. Linköpings universitet, Hälsouniversitetet.
    Gauffin, Helena
    Linköpings universitet, Centrum för medicinsk bildvetenskap och visualisering, CMIV. Linköpings universitet, Institutionen för klinisk och experimentell medicin, Neurologi. Linköpings universitet, Hälsouniversitetet.
    McAllister, Anita
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Logopedi. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Sinnescentrum, Öron- näsa- och halskliniken US.
    Lundberg, Peter
    Linköpings universitet, Centrum för medicinsk bildvetenskap och visualisering, CMIV. Linköpings universitet, Institutionen för medicin och hälsa, Medicinsk radiofysik. Linköpings universitet, Institutionen för medicin och hälsa, Medicinsk radiologi. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Centrum för kirurgi, ortopedi och cancervård, Radiofysikavdelningen US.
    Ulrici, Daniel
    Östergötlands Läns Landsting, Närsjukvården i centrala Östergötland, Neurologiska kliniken.
    Landtblom, Anne-Marie
    Östergötlands Läns Landsting, Närsjukvården i centrala Östergötland, Neurologiska kliniken. Linköpings universitet, Institutionen för klinisk och experimentell medicin, Neurologi. Linköpings universitet, Hälsouniversitetet.
    Karlsson, Thomas
    Linköpings universitet, Institutionen för beteendevetenskap och lärande. Linköpings universitet, Filosofiska fakulteten.
    Engström, Maria
    Linköpings universitet, Centrum för medicinsk bildvetenskap och visualisering, CMIV. Linköpings universitet, Institutionen för medicin och hälsa, Medicinsk radiologi. Linköpings universitet, Hälsouniversitetet.
    Language deficits in Epilepsy, an fMRI study2012Konferensbidrag (Övrigt vetenskapligt)
    Abstract [en]

    Cognitive functions in people with epilepsy are affected by focality, number of generalized seizures, side effects of antiepileptic drugs (AEDs) or the underlying disease (Kwan, 2001). Newly diagnosed patients have cognitive deficits even before starting on AEDs. Performance declines already in the first year after diagnosis and the impairment continues in the following years (Taylor, 2010; Baker, 2011). In mesial temporal lobe epilepsy (TLE) the hippocampal damage seems to be progressive and accompanied by thinning of neocortex (Briellmann, 2002; Bernhardt, 2009). Widespread structural and functional abnormalities in left TLE can affect more distant networks (Bonilha, 2009); a damage pattern also seen in right TLE (Karunanayaka, 2011).

  • 61.
    van Ettinger-Veenstra, Helene
    et al.
    Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för radiologiska vetenskaper. Linköpings universitet, Hälsouniversitetet. Linköpings universitet, Centrum för medicinsk bildvetenskap och visualisering, CMIV.
    McAllister, Anita
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för neurovetenskap. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Sinnescentrum, Öron- näsa- och halskliniken US.
    Lundberg, Peter
    Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för radiologiska vetenskaper. Linköpings universitet, Hälsouniversitetet. Linköpings universitet, Centrum för medicinsk bildvetenskap och visualisering, CMIV. Östergötlands Läns Landsting, Centrum för kirurgi, ortopedi och cancervård, Radiofysikavdelningen US. Östergötlands Läns Landsting, Diagnostikcentrum, Röntgenkliniken i Linköping.
    Karlsson, T
    Engström, Maria
    Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för radiologiska vetenskaper. Linköpings universitet, Centrum för medicinsk bildvetenskap och visualisering, CMIV. Linköpings universitet, Hälsouniversitetet.
    Neural Adaptability During Sentence Reading: Higher Language Ability but nor Semantic Sentence Complexity Increases Neural Activity, SNL (Soc Neurobiol Language).2014Konferensbidrag (Övrigt vetenskapligt)
  • 62.
    Van Ettinger-Veenstra, Helene
    et al.
    Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för radiologiska vetenskaper. Linköpings universitet, Medicinska fakulteten. Linköpings universitet, Centrum för medicinsk bildvetenskap och visualisering, CMIV.
    Mcallister, Anita
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för neuro- och inflammationsvetenskap. Linköpings universitet, Medicinska fakulteten. Karolinska Institute, Sweden.
    Lundberg, Peter
    Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för radiologiska vetenskaper. Linköpings universitet, Medicinska fakulteten. Region Östergötland, Centrum för kirurgi, ortopedi och cancervård, Radiofysikavdelningen US. Linköpings universitet, Centrum för medicinsk bildvetenskap och visualisering, CMIV.
    Karlsson, Thomas
    Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten.
    Engström, Maria
    Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för radiologiska vetenskaper. Linköpings universitet, Medicinska fakulteten. Linköpings universitet, Centrum för medicinsk bildvetenskap och visualisering, CMIV.
    Higher Language Ability is Related to Angular Gyrus Activation Increase During Semantic Processing, Independent of Sentence Incongruency2016Ingår i: Frontiers in Human Neuroscience, ISSN 1662-5161, E-ISSN 1662-5161, Vol. 10, nr 110Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    This study investigates the relation between individual language ability and neural semantic processing abilities. Our aim was to explore whether high-level language ability would correlate to decreased activation in language-specific regions or rather increased activation in supporting language regions during processing of sentences. Moreover, we were interested if observed neural activation patterns are modulated by semantic incongruency similarly to previously observed changes upon syntactic congruency modulation. We investigated 27 healthy adults with a sentence reading task which tapped language comprehension and inference, and modulated sentence congruency employing functional magnetic resonance imaging (fMRI). We assessed the relation between neural activation, congruency modulation, and test performance on a high-level language ability assessment with multiple regression analysis. Our results showed increased activation in the left-hemispheric angular gyrus extending to the temporal lobe related to high language ability. This effect was independent of semantic congruency, and no significant relation between language ability and incongruency modulation was observed. Furthermore, there was a significant increase of activation in the inferior frontal gyrus (IFG) bilaterally when the sentences were incongruent, indicating that processing incongruent sentences was more demanding than processing congruent sentences and required increased activation in language regions. The correlation of high-level language ability with increased rather than decreased activation in the left angular gyrus, a region specific for language processing, is opposed to what the neural efficiency hypothesis would predict. We can conclude that no evidence is found for an interaction between semantic congruency related brain activation and highlevel language performance, even though the semantic incongruent condition shows to be more demanding and evoking more neural activation.

  • 63.
    van Ettinger-Veenstra, Helene
    et al.
    Linköpings universitet, Centrum för medicinsk bildvetenskap och visualisering, CMIV. Linköpings universitet, Institutionen för medicin och hälsa, Medicinsk radiologi. Linköpings universitet, Hälsouniversitetet.
    McAllister, Anita
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Logopedi. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Sinnescentrum, Öron- näsa- och halskliniken US.
    Lundberg, Peter
    Linköpings universitet, Centrum för medicinsk bildvetenskap och visualisering, CMIV. Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för radiologiska vetenskaper. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Centrum för kirurgi, ortopedi och cancervård, Radiofysikavdelningen US. Östergötlands Läns Landsting, Diagnostikcentrum, Röntgenkliniken i Linköping.
    Karlsson, Thomas
    Linköpings universitet, Centrum för medicinsk bildvetenskap och visualisering, CMIV. Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap. Linköpings universitet, Filosofiska fakulteten.
    Engström, Maria
    Linköpings universitet, Centrum för medicinsk bildvetenskap och visualisering, CMIV. Linköpings universitet, Institutionen för medicin och hälsa, Medicinsk radiologi. Linköpings universitet, Hälsouniversitetet.
    Laterality shifts in neural activation coupled to language ability2013Manuskript (preprint) (Övrigt vetenskapligt)
    Abstract [en]

    The right-hemispheric homologues to Broca’s and Wernicke’s area play an important, but currently poorly understood role in language ability. In the current study, we tested 27 healthy adults for their language ability. We acquired functional magnetic resonance imaging (fMRI) data when the participants performed a sentence reading and a word fluency task. The fMRI data were used to calculate a measure of brain laterality – the laterality index – in the inferior frontal gyrus, the superior and middle temporal gyrus, and the angular gyrus. These laterality measurements were correlated with performance scores on language tasks administered prior to fMRI. We expected to see that high performance was characterized by a more efficient, i.e. decreased, neural activation pattern in typical language areas. Furthermore, we expected to see activation in additional, right-hemispheric brain regions in high performing subjects as a sign of neural adaptability.

    High performance in a test measuring subtle language deficits (BeSS test) was related to increased activation in the right middle temporal gyrus when the participants were reading sentences. Thus, semantic ability correlated negatively with laterality in the temporal lobe, but not in the frontal lobe. For increased verbal fluency ability, we did observe a decreased left-hemispheric dominance in the inferior frontal gyrus when the participants were generating words. Increased task demands in the word generation task were not related to brain activation, but in the sentence reading task, the bilateral inferior frontal gyrus did exhibit an increase in activation when the sentences increased in difficulty. This result was independent of individual language ability. Increased brain activation at increased difficulty of a language task is interpreted as a sign that the brain recruits additional resources upon higher demands. The negative correlation between language ability and laterality in the in right-hemispheric middle temporal gyrus indicates a higher degree of neural adaptability in the temporal lobes of high skilled individuals.

  • 64.
    van Ettinger-Veenstra, Helene
    et al.
    Linköpings universitet, Centrum för medicinsk bildvetenskap och visualisering, CMIV. Linköpings universitet, Institutionen för medicin och hälsa, Medicinsk radiologi. Linköpings universitet, Hälsouniversitetet.
    Ragnehed, Mattias
    Linköpings universitet, Centrum för medicinsk bildvetenskap och visualisering, CMIV. Linköpings universitet, Institutionen för medicin och hälsa, Medicinsk radiologi. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Centrum för kirurgi, ortopedi och cancervård, Radiofysikavdelningen US.
    McAllister, Anita
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Logopedi. Linköpings universitet, Hälsouniversitetet.
    Lundberg, Peter
    Linköpings universitet, Centrum för medicinsk bildvetenskap och visualisering, CMIV. Linköpings universitet, Institutionen för medicin och hälsa, Medicinsk radiofysik. Linköpings universitet, Institutionen för medicin och hälsa, Medicinsk radiologi. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Centrum för kirurgi, ortopedi och cancervård, Radiofysikavdelningen US. Östergötlands Läns Landsting, Diagnostikcentrum, Röntgenkliniken i Linköping.
    Engström, Maria
    Linköpings universitet, Centrum för medicinsk bildvetenskap och visualisering, CMIV. Linköpings universitet, Institutionen för medicin och hälsa, Medicinsk radiologi. Linköpings universitet, Hälsouniversitetet.
    Right-hemispheric cortical contributions to language ability in healthy adults2012Ingår i: Brain and Language, ISSN 0093-934X, E-ISSN 1090-2155, Vol. 120, nr 3, s. 395-400Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    In this study we investigated the correlation between individual linguistic ability based on performance levels and their engagement of typical and atypical language areas in the brain. Eighteen healthy subjects between 21 and 64 years participated in language ability tests, and subsequent functional MRI scans measuring brain activity in response to a sentence completion and a word fluency task. Performance in both reading and high-level language tests correlated positively with increased right-hemispheric activation in the inferior frontal gyrus (specifically Brodmann area 47), the dorsolateral prefrontal cortex (DLPFC), and the medial temporal gyrus (Brodmann area 21). In contrast, we found a negative correlation between performance and left-hemispheric DLPFC activation.

    Our findings indicate that the right lateral frontal and right temporal regions positively modulate aspects of language ability.

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