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Impact of stimulus-related factors and hearing impairment on listening effort as indicated by pupil dilation
Vrije University of Amsterdam, Netherlands; Amsterdam Public Health Research Institute, Netherlands; Oticon AS, Denmark.
Linköping University, Department of Behavioural Sciences and Learning. Linköping University, The Swedish Institute for Disability Research. Linköping University, Faculty of Arts and Sciences. Vrije University of Amsterdam, Netherlands; Amsterdam Public Health Research Institute, Netherlands.
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. Oticon AS, Denmark.
Oticon AS, Denmark; Technical University of Denmark, Denmark.
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2017 (English)In: Hearing Research, ISSN 0378-5955, E-ISSN 1878-5891, Vol. 351, 68-79 p.Article in journal (Refereed) Published
Abstract [en]

Previous research has reported effects of masker type and signal-to-noise ratio (SNR) on listening effort, as indicated by the peak pupil dilation (PPD) relative to baseline during speech recognition. At about 50% correct sentence recognition performance, increasing SNRs generally results in declining PPDs, indicating reduced effort. However, the decline in PPD over SNRs has been observed to be less pronounced for hearing-impaired (HI) compared to normal-hearing (NH) listeners. The presence of a competing talker during speech recognition generally resulted in larger PPDs as compared to the presence of a fluctuating or stationary background noise. The aim of the present study was to examine the interplay between hearing-status, a broad range of SNRs corresponding to sentence recognition performance varying from 0 to 100% correct, and different masker types (stationary noise and single-talker masker) on the PPD during speech perception. Twenty-five HI and 32 age-matched NH participants listened to sentences across a broad range of SNRs, masked with speech from a single talker (-25 dB to +15 dB SNR) or with stationary noise (-12 dB to +16 dB). Correct sentence recognition scores and pupil responses were recorded during stimulus presentation. With a stationary masker, NH listeners show maximum PPD across a relatively narrow range of low SNRs, while HI listeners show relatively large PPD across a wide range of ecological SNRs. With the single-talker masker, maximum PPD was observed in the mid-range of SNRs around 50% correct sentence recognition performance, while smaller PPDs were observed at lower and higher SNRs. Mixed-model ANOVAs revealed significant interactions between hearing-status and SNR on the PPD for both masker types. Our data show a different pattern of PPDs across SNRs between groups, which indicates that listening and the allocation of effort during listening in daily life environments may be different for NH and HI listeners. (C) 2017 The Authors. Published by Elsevier B.V.

Place, publisher, year, edition, pages
Elsevier, 2017. Vol. 351, 68-79 p.
Keyword [en]
Hearing impairment; Speech recognition; Pupil dilation; Listening effort; Signal-to-noise ratio
National Category
Otorhinolaryngology
Identifiers
URN: urn:nbn:se:liu:diva-139538DOI: 10.1016/j.heares.2017.05.012ISI: 000405155500007PubMedID: 28622894Scopus ID: 2-s2.0-85020735333OAI: oai:DiVA.org:liu-139538DiVA: diva2:1130165
Note

Funding Agencies|European Commission [FP7-LISTEN607373]

Available from: 2017-08-08 Created: 2017-08-08 Last updated: 2017-09-04Bibliographically approved

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The full text will be freely available from 2018-05-25 15:42
Available from 2018-05-25 15:42

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Zekveld, AdrianaLunner, Thomas
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Department of Behavioural Sciences and LearningThe Swedish Institute for Disability ResearchFaculty of Arts and SciencesDisability Research
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CiteExportLink to record
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Citation style
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