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Spectrotemporal Modulation Sensitivity as a Predictor of Speech-Reception Performance in Noise With Hearing Aids
Walter Reed National Mil Medical Centre, MD 20889 USA.
Linköping University, Department of Behavioural Sciences and Learning, Disability Research. Linköping University, Faculty of Arts and Sciences. Linköping University, The Swedish Institute for Disability Research.
Linköping University, Department of Clinical and Experimental Medicine, Division of Neuro and Inflammation Science. Linköping University, Faculty of Medicine and Health Sciences. Region Östergötland, Anaesthetics, Operations and Specialty Surgery Center, Department of Otorhinolaryngology in Linköping.
Linköping University, Department of Clinical and Experimental Medicine, Division of Neuro and Inflammation Science. Linköping University, Faculty of Medicine and Health Sciences.ORCID iD: 0000-0003-3350-8997
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2016 (English)In: TRENDS IN HEARING, ISSN 2331-2165, Vol. 20, article id 2331216516670387Article in journal (Refereed) Published
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.

Place, publisher, year, edition, pages
SAGE PUBLICATIONS INC , 2016. Vol. 20, article id 2331216516670387
Keywords [en]
hearing aids; amplitude modulation; cognitive processing; temporal fine structure; noise
National Category
Otorhinolaryngology
Identifiers
URN: urn:nbn:se:liu:diva-133115DOI: 10.1177/2331216516670387ISI: 000388149600001PubMedID: 27815546OAI: oai:DiVA.org:liu-133115DiVA, id: diva2:1055267
Note

Funding Agencies|Linnaeus Centre HEAD excellence center grant from the Swedish Research Council; FORTE

Available from: 2016-12-12 Created: 2016-12-09 Last updated: 2016-12-29

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Danielsson, HenrikHällgren, MathiasStenfelt, StefanRönnberg, JerkerLunner, Thomas
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Disability ResearchFaculty of Arts and SciencesThe Swedish Institute for Disability ResearchDivision of Neuro and Inflammation ScienceFaculty of Medicine and Health SciencesDepartment of Otorhinolaryngology in Linköping
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