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Electrophysiological and Behavioral Evidence of Reduced Binaural Temporal Processing in the Aging and Hearing Impaired Human Auditory System
A person’s ability to process temporal fine structure information is indispensable for speech understanding. As speech understanding typically deteriorates throughout adult life, this study aimed to disentangle age and hearing impairment (HI)-related changes in binaural temporal processing. This was...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
SAGE Publications
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6053861/ https://www.ncbi.nlm.nih.gov/pubmed/30022734 http://dx.doi.org/10.1177/2331216518785733 |
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author | Vercammen, Charlotte Goossens, Tine Undurraga, Jaime Wouters, Jan van Wieringen, Astrid |
author_facet | Vercammen, Charlotte Goossens, Tine Undurraga, Jaime Wouters, Jan van Wieringen, Astrid |
author_sort | Vercammen, Charlotte |
collection | PubMed |
description | A person’s ability to process temporal fine structure information is indispensable for speech understanding. As speech understanding typically deteriorates throughout adult life, this study aimed to disentangle age and hearing impairment (HI)-related changes in binaural temporal processing. This was achieved by examining neural and behavioral processing of interaural phase differences (IPDs). Neural IPD processing was studied electrophysiologically through steady-state activity in the electroencephalogram evoked by periodic changes in IPDs over time, embedded in the temporal fine structure of acoustic stimulation. In addition, behavioral IPD discrimination thresholds were determined for the same stimuli. To disentangle potential effects of age from those of HI, both measures were applied to six participant groups: young, middle-aged, and older persons, with either normal hearing or sensorineural HI. All participants passed a cognitive screening, and stimulus audibility was controlled for in participants with HI. The results demonstrated that HI changes neural processing of binaural temporal information for all age-groups included in this study. These outcomes were revealed, superimposed on age-related changes that emerge between young adulthood and middle age. Poorer neural outcomes were also associated with poorer behavioral performance, even though the behavioral IPD discrimination thresholds were affected by age rather than by HI. The neural outcomes of this study are the first to evidence and disentangle the dual load of age and HI on binaural temporal processing. These results could be a valuable first step toward future research on rehabilitation. |
format | Online Article Text |
id | pubmed-6053861 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | SAGE Publications |
record_format | MEDLINE/PubMed |
spelling | pubmed-60538612018-07-23 Electrophysiological and Behavioral Evidence of Reduced Binaural Temporal Processing in the Aging and Hearing Impaired Human Auditory System Vercammen, Charlotte Goossens, Tine Undurraga, Jaime Wouters, Jan van Wieringen, Astrid Trends Hear Original Article A person’s ability to process temporal fine structure information is indispensable for speech understanding. As speech understanding typically deteriorates throughout adult life, this study aimed to disentangle age and hearing impairment (HI)-related changes in binaural temporal processing. This was achieved by examining neural and behavioral processing of interaural phase differences (IPDs). Neural IPD processing was studied electrophysiologically through steady-state activity in the electroencephalogram evoked by periodic changes in IPDs over time, embedded in the temporal fine structure of acoustic stimulation. In addition, behavioral IPD discrimination thresholds were determined for the same stimuli. To disentangle potential effects of age from those of HI, both measures were applied to six participant groups: young, middle-aged, and older persons, with either normal hearing or sensorineural HI. All participants passed a cognitive screening, and stimulus audibility was controlled for in participants with HI. The results demonstrated that HI changes neural processing of binaural temporal information for all age-groups included in this study. These outcomes were revealed, superimposed on age-related changes that emerge between young adulthood and middle age. Poorer neural outcomes were also associated with poorer behavioral performance, even though the behavioral IPD discrimination thresholds were affected by age rather than by HI. The neural outcomes of this study are the first to evidence and disentangle the dual load of age and HI on binaural temporal processing. These results could be a valuable first step toward future research on rehabilitation. SAGE Publications 2018-07-19 /pmc/articles/PMC6053861/ /pubmed/30022734 http://dx.doi.org/10.1177/2331216518785733 Text en © The Author(s) 2018 http://creativecommons.org/licenses/by-nc/4.0/ Creative Commons Non Commercial CC BY-NC: This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (http://www.creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage). |
spellingShingle | Original Article Vercammen, Charlotte Goossens, Tine Undurraga, Jaime Wouters, Jan van Wieringen, Astrid Electrophysiological and Behavioral Evidence of Reduced Binaural Temporal Processing in the Aging and Hearing Impaired Human Auditory System |
title | Electrophysiological and Behavioral Evidence of Reduced Binaural
Temporal Processing in the Aging and Hearing Impaired Human Auditory
System |
title_full | Electrophysiological and Behavioral Evidence of Reduced Binaural
Temporal Processing in the Aging and Hearing Impaired Human Auditory
System |
title_fullStr | Electrophysiological and Behavioral Evidence of Reduced Binaural
Temporal Processing in the Aging and Hearing Impaired Human Auditory
System |
title_full_unstemmed | Electrophysiological and Behavioral Evidence of Reduced Binaural
Temporal Processing in the Aging and Hearing Impaired Human Auditory
System |
title_short | Electrophysiological and Behavioral Evidence of Reduced Binaural
Temporal Processing in the Aging and Hearing Impaired Human Auditory
System |
title_sort | electrophysiological and behavioral evidence of reduced binaural
temporal processing in the aging and hearing impaired human auditory
system |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6053861/ https://www.ncbi.nlm.nih.gov/pubmed/30022734 http://dx.doi.org/10.1177/2331216518785733 |
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