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The effect of interaural timing on the posterior auricular muscle reflex in normal adult volunteers
The posterior auricular muscle (PAM) reflex to sounds has been used clinically to determine hearing threshold as an alternative to other audiological diagnostic measures such as the auditory brainstem response. We have shown that the PAM response is also sensitive to interaural timing differences in...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5884533/ https://www.ncbi.nlm.nih.gov/pubmed/29617426 http://dx.doi.org/10.1371/journal.pone.0194965 |
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author | Doubell, T. P. Alsetrawi, A. Bastawrous, D. A. S. Bastawrous, M. A. S. Daibes, A. Jadalla, A. Schnupp, J. W. H. |
author_facet | Doubell, T. P. Alsetrawi, A. Bastawrous, D. A. S. Bastawrous, M. A. S. Daibes, A. Jadalla, A. Schnupp, J. W. H. |
author_sort | Doubell, T. P. |
collection | PubMed |
description | The posterior auricular muscle (PAM) reflex to sounds has been used clinically to determine hearing threshold as an alternative to other audiological diagnostic measures such as the auditory brainstem response. We have shown that the PAM response is also sensitive to interaural timing differences in normally hearing adults. PAM responses were evoked by both ipsilateral/ contralateral monaural stimulation and by binaural stimulation. Introducing sound delays ipsilaterally or contralaterally decreased the PAM response amplitude and increased its latency. The PAM response in this study shows a qualitatively similar pattern to that seen by the binaural interaction component (BIC) of the auditory brainstem potential to binaural clicks described in previous studies, in that both: have their shortest latency and maximal amplitudes centred around zero interaural timing differences, have response latencies increase with increasing interaural delays up to 1.2 ms and have response amplitudes decrease with increasing interaural delays of up to 1.2 ms. Our data show that the PAM response may be useful in measuring binaural integration in humans non-invasively for diagnostic or research studies. |
format | Online Article Text |
id | pubmed-5884533 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-58845332018-04-13 The effect of interaural timing on the posterior auricular muscle reflex in normal adult volunteers Doubell, T. P. Alsetrawi, A. Bastawrous, D. A. S. Bastawrous, M. A. S. Daibes, A. Jadalla, A. Schnupp, J. W. H. PLoS One Research Article The posterior auricular muscle (PAM) reflex to sounds has been used clinically to determine hearing threshold as an alternative to other audiological diagnostic measures such as the auditory brainstem response. We have shown that the PAM response is also sensitive to interaural timing differences in normally hearing adults. PAM responses were evoked by both ipsilateral/ contralateral monaural stimulation and by binaural stimulation. Introducing sound delays ipsilaterally or contralaterally decreased the PAM response amplitude and increased its latency. The PAM response in this study shows a qualitatively similar pattern to that seen by the binaural interaction component (BIC) of the auditory brainstem potential to binaural clicks described in previous studies, in that both: have their shortest latency and maximal amplitudes centred around zero interaural timing differences, have response latencies increase with increasing interaural delays up to 1.2 ms and have response amplitudes decrease with increasing interaural delays of up to 1.2 ms. Our data show that the PAM response may be useful in measuring binaural integration in humans non-invasively for diagnostic or research studies. Public Library of Science 2018-04-04 /pmc/articles/PMC5884533/ /pubmed/29617426 http://dx.doi.org/10.1371/journal.pone.0194965 Text en © 2018 Doubell et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Article Doubell, T. P. Alsetrawi, A. Bastawrous, D. A. S. Bastawrous, M. A. S. Daibes, A. Jadalla, A. Schnupp, J. W. H. The effect of interaural timing on the posterior auricular muscle reflex in normal adult volunteers |
title | The effect of interaural timing on the posterior auricular muscle reflex in normal adult volunteers |
title_full | The effect of interaural timing on the posterior auricular muscle reflex in normal adult volunteers |
title_fullStr | The effect of interaural timing on the posterior auricular muscle reflex in normal adult volunteers |
title_full_unstemmed | The effect of interaural timing on the posterior auricular muscle reflex in normal adult volunteers |
title_short | The effect of interaural timing on the posterior auricular muscle reflex in normal adult volunteers |
title_sort | effect of interaural timing on the posterior auricular muscle reflex in normal adult volunteers |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5884533/ https://www.ncbi.nlm.nih.gov/pubmed/29617426 http://dx.doi.org/10.1371/journal.pone.0194965 |
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