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Free-field evoked auditory brainstem responses in cochlear implant users

The importance of binaural cues in auditory stream formation and sound source segregation is widely accepted. When treating one ear with a cochlear implant (CI) the peripheral auditory system gets partially replaced and processing delays get added potentially, thus important interaural time differen...

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Autores principales: Schebsdat, Erik, Kohl, Manuel C., Corona-Strauss, Farah I., Seidler, Harald, Strauss, Daniel J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: PAGEPress Publications, Pavia, Italy 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6291745/
https://www.ncbi.nlm.nih.gov/pubmed/30613372
http://dx.doi.org/10.4081/audiores.2018.216
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author Schebsdat, Erik
Kohl, Manuel C.
Corona-Strauss, Farah I.
Seidler, Harald
Strauss, Daniel J.
author_facet Schebsdat, Erik
Kohl, Manuel C.
Corona-Strauss, Farah I.
Seidler, Harald
Strauss, Daniel J.
author_sort Schebsdat, Erik
collection PubMed
description The importance of binaural cues in auditory stream formation and sound source segregation is widely accepted. When treating one ear with a cochlear implant (CI) the peripheral auditory system gets partially replaced and processing delays get added potentially, thus important interaural time differences get altered. However, these effects are not fully understood, leaving a lack of systematic binaural fitting strategies with respect to an optimal binaural fusion. To get new insights into such alterations, we suggest a novel method of free-field auditory brainstem evoked responses (ABRs) analysis in CI users. This method does not bypass the technically induced intrinsic delays of the sound processor while leaving the whole electrode array active, thus the most natural way of stimulation is provided. We compared the ABRs collected of 12 CI users and 12 normal hearing listeners using two different stimuli (chirp, click) at four different intensities each. We analyzed the ABRs using the average of 2000 trials as well as a single trial analysis and found consistent results in the ABRs’ amplitudes and latencies, as well as in single trial relationships between both groups. This method provides a new perspective into the natural CI users’ ABRs and can be useful in future research regarding binaural interaction and fusion.
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spelling pubmed-62917452019-01-04 Free-field evoked auditory brainstem responses in cochlear implant users Schebsdat, Erik Kohl, Manuel C. Corona-Strauss, Farah I. Seidler, Harald Strauss, Daniel J. Audiol Res Article The importance of binaural cues in auditory stream formation and sound source segregation is widely accepted. When treating one ear with a cochlear implant (CI) the peripheral auditory system gets partially replaced and processing delays get added potentially, thus important interaural time differences get altered. However, these effects are not fully understood, leaving a lack of systematic binaural fitting strategies with respect to an optimal binaural fusion. To get new insights into such alterations, we suggest a novel method of free-field auditory brainstem evoked responses (ABRs) analysis in CI users. This method does not bypass the technically induced intrinsic delays of the sound processor while leaving the whole electrode array active, thus the most natural way of stimulation is provided. We compared the ABRs collected of 12 CI users and 12 normal hearing listeners using two different stimuli (chirp, click) at four different intensities each. We analyzed the ABRs using the average of 2000 trials as well as a single trial analysis and found consistent results in the ABRs’ amplitudes and latencies, as well as in single trial relationships between both groups. This method provides a new perspective into the natural CI users’ ABRs and can be useful in future research regarding binaural interaction and fusion. PAGEPress Publications, Pavia, Italy 2018-12-07 /pmc/articles/PMC6291745/ /pubmed/30613372 http://dx.doi.org/10.4081/audiores.2018.216 Text en ©Copyright E. Schebsdat et al., 2018 http://creativecommons.org/licenses/by-nc/4.0/ This article is distributed under the terms of the Creative Commons Attribution Noncommercial License (by-nc 4.0) which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.
spellingShingle Article
Schebsdat, Erik
Kohl, Manuel C.
Corona-Strauss, Farah I.
Seidler, Harald
Strauss, Daniel J.
Free-field evoked auditory brainstem responses in cochlear implant users
title Free-field evoked auditory brainstem responses in cochlear implant users
title_full Free-field evoked auditory brainstem responses in cochlear implant users
title_fullStr Free-field evoked auditory brainstem responses in cochlear implant users
title_full_unstemmed Free-field evoked auditory brainstem responses in cochlear implant users
title_short Free-field evoked auditory brainstem responses in cochlear implant users
title_sort free-field evoked auditory brainstem responses in cochlear implant users
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6291745/
https://www.ncbi.nlm.nih.gov/pubmed/30613372
http://dx.doi.org/10.4081/audiores.2018.216
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