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Corrective binaural processing for bilateral cochlear implant patients

Although bilateral cochlear implant users receive input to both ears, they nonetheless have relatively poor localization abilities in the horizontal plane. This is likely because of the two binaural cues, they have good sensitivity to interaural differences of level (inter-aural level differences, o...

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Detalles Bibliográficos
Autor principal: Brown, Christopher A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5774684/
https://www.ncbi.nlm.nih.gov/pubmed/29351279
http://dx.doi.org/10.1371/journal.pone.0187965
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author Brown, Christopher A.
author_facet Brown, Christopher A.
author_sort Brown, Christopher A.
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description Although bilateral cochlear implant users receive input to both ears, they nonetheless have relatively poor localization abilities in the horizontal plane. This is likely because of the two binaural cues, they have good sensitivity to interaural differences of level (inter-aural level differences, or ILDs), but not those of time (inter-aural time differences; ITDs). Here, localization performance is assessed in six bilateral cochlear implant patients when instantaneous ITDs are measured and converted to ILDs, a strategy that results in larger-than-typical ILDs. The added ILDs are corrective, in that they are derived from individual listener performance across both frequency and azimuth, so that they are small where a listener performs well, and increase as performance deviates from ideal. Results show significantly improved localization performance as a result of this strategy, with two of the six listeners achieving levels of performance typically observed in NH listeners.
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spelling pubmed-57746842018-01-26 Corrective binaural processing for bilateral cochlear implant patients Brown, Christopher A. PLoS One Research Article Although bilateral cochlear implant users receive input to both ears, they nonetheless have relatively poor localization abilities in the horizontal plane. This is likely because of the two binaural cues, they have good sensitivity to interaural differences of level (inter-aural level differences, or ILDs), but not those of time (inter-aural time differences; ITDs). Here, localization performance is assessed in six bilateral cochlear implant patients when instantaneous ITDs are measured and converted to ILDs, a strategy that results in larger-than-typical ILDs. The added ILDs are corrective, in that they are derived from individual listener performance across both frequency and azimuth, so that they are small where a listener performs well, and increase as performance deviates from ideal. Results show significantly improved localization performance as a result of this strategy, with two of the six listeners achieving levels of performance typically observed in NH listeners. Public Library of Science 2018-01-19 /pmc/articles/PMC5774684/ /pubmed/29351279 http://dx.doi.org/10.1371/journal.pone.0187965 Text en © 2018 Christopher A. Brown 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
Brown, Christopher A.
Corrective binaural processing for bilateral cochlear implant patients
title Corrective binaural processing for bilateral cochlear implant patients
title_full Corrective binaural processing for bilateral cochlear implant patients
title_fullStr Corrective binaural processing for bilateral cochlear implant patients
title_full_unstemmed Corrective binaural processing for bilateral cochlear implant patients
title_short Corrective binaural processing for bilateral cochlear implant patients
title_sort corrective binaural processing for bilateral cochlear implant patients
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5774684/
https://www.ncbi.nlm.nih.gov/pubmed/29351279
http://dx.doi.org/10.1371/journal.pone.0187965
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