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Audiovisual Speech Recognition With a Cochlear Implant and Increased Perceptual and Cognitive Demands
Speech recognition in complex environments involves focusing on the most relevant speech signal while ignoring distractions. Difficulties can arise due to the incoming signal’s characteristics (e.g., accented pronunciation, background noise, distortion) or the listener’s characteristics (e.g., heari...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
SAGE Publications
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7575283/ https://www.ncbi.nlm.nih.gov/pubmed/33054620 http://dx.doi.org/10.1177/2331216520960601 |
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author | Tinnemore, Anna R. Gordon-Salant, Sandra Goupell, Matthew J. |
author_facet | Tinnemore, Anna R. Gordon-Salant, Sandra Goupell, Matthew J. |
author_sort | Tinnemore, Anna R. |
collection | PubMed |
description | Speech recognition in complex environments involves focusing on the most relevant speech signal while ignoring distractions. Difficulties can arise due to the incoming signal’s characteristics (e.g., accented pronunciation, background noise, distortion) or the listener’s characteristics (e.g., hearing loss, advancing age, cognitive abilities). Listeners who use cochlear implants (CIs) must overcome these difficulties while listening to an impoverished version of the signals available to listeners with normal hearing (NH). In the real world, listeners often attempt tasks concurrent with, but unrelated to, speech recognition. This study sought to reveal the effects of visual distraction and performing a simultaneous visual task on audiovisual speech recognition. Two groups, those with CIs and those with NH listening to vocoded speech, were presented videos of unaccented and accented talkers with and without visual distractions, and with a secondary task. It was hypothesized that, compared with those with NH, listeners with CIs would be less influenced by visual distraction or a secondary visual task because their prolonged reliance on visual cues to aid auditory perception improves the ability to suppress irrelevant information. Results showed that visual distractions alone did not significantly decrease speech recognition performance for either group, but adding a secondary task did. Speech recognition was significantly poorer for accented compared with unaccented speech, and this difference was greater for CI listeners. These results suggest that speech recognition performance is likely more dependent on incoming signal characteristics than a difference in adaptive strategies for managing distractions between those who listen with and without a CI. |
format | Online Article Text |
id | pubmed-7575283 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | SAGE Publications |
record_format | MEDLINE/PubMed |
spelling | pubmed-75752832020-10-27 Audiovisual Speech Recognition With a Cochlear Implant and Increased Perceptual and Cognitive Demands Tinnemore, Anna R. Gordon-Salant, Sandra Goupell, Matthew J. Trends Hear Original Article Speech recognition in complex environments involves focusing on the most relevant speech signal while ignoring distractions. Difficulties can arise due to the incoming signal’s characteristics (e.g., accented pronunciation, background noise, distortion) or the listener’s characteristics (e.g., hearing loss, advancing age, cognitive abilities). Listeners who use cochlear implants (CIs) must overcome these difficulties while listening to an impoverished version of the signals available to listeners with normal hearing (NH). In the real world, listeners often attempt tasks concurrent with, but unrelated to, speech recognition. This study sought to reveal the effects of visual distraction and performing a simultaneous visual task on audiovisual speech recognition. Two groups, those with CIs and those with NH listening to vocoded speech, were presented videos of unaccented and accented talkers with and without visual distractions, and with a secondary task. It was hypothesized that, compared with those with NH, listeners with CIs would be less influenced by visual distraction or a secondary visual task because their prolonged reliance on visual cues to aid auditory perception improves the ability to suppress irrelevant information. Results showed that visual distractions alone did not significantly decrease speech recognition performance for either group, but adding a secondary task did. Speech recognition was significantly poorer for accented compared with unaccented speech, and this difference was greater for CI listeners. These results suggest that speech recognition performance is likely more dependent on incoming signal characteristics than a difference in adaptive strategies for managing distractions between those who listen with and without a CI. SAGE Publications 2020-10-15 /pmc/articles/PMC7575283/ /pubmed/33054620 http://dx.doi.org/10.1177/2331216520960601 Text en © The Author(s) 2020 https://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 (https://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 Tinnemore, Anna R. Gordon-Salant, Sandra Goupell, Matthew J. Audiovisual Speech Recognition With a Cochlear Implant and Increased Perceptual and Cognitive Demands |
title | Audiovisual Speech Recognition With a Cochlear Implant and Increased
Perceptual and Cognitive Demands |
title_full | Audiovisual Speech Recognition With a Cochlear Implant and Increased
Perceptual and Cognitive Demands |
title_fullStr | Audiovisual Speech Recognition With a Cochlear Implant and Increased
Perceptual and Cognitive Demands |
title_full_unstemmed | Audiovisual Speech Recognition With a Cochlear Implant and Increased
Perceptual and Cognitive Demands |
title_short | Audiovisual Speech Recognition With a Cochlear Implant and Increased
Perceptual and Cognitive Demands |
title_sort | audiovisual speech recognition with a cochlear implant and increased
perceptual and cognitive demands |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7575283/ https://www.ncbi.nlm.nih.gov/pubmed/33054620 http://dx.doi.org/10.1177/2331216520960601 |
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