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Signal envelope and speech intelligibility differentially impact auditory motion perception
Our acoustic environment contains a plethora of complex sounds that are often in motion. To gauge approaching danger and communicate effectively, listeners need to localize and identify sounds, which includes determining sound motion. This study addresses which acoustic cues impact listeners’ abilit...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8302594/ https://www.ncbi.nlm.nih.gov/pubmed/34302032 http://dx.doi.org/10.1038/s41598-021-94662-y |
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author | Warnecke, Michaela Litovsky, Ruth Y. |
author_facet | Warnecke, Michaela Litovsky, Ruth Y. |
author_sort | Warnecke, Michaela |
collection | PubMed |
description | Our acoustic environment contains a plethora of complex sounds that are often in motion. To gauge approaching danger and communicate effectively, listeners need to localize and identify sounds, which includes determining sound motion. This study addresses which acoustic cues impact listeners’ ability to determine sound motion. Signal envelope (ENV) cues are implicated in both sound motion tracking and stimulus intelligibility, suggesting that these processes could be competing for sound processing resources. We created auditory chimaera from speech and noise stimuli and varied the number of frequency bands, effectively manipulating speech intelligibility. Normal-hearing adults were presented with stationary or moving chimaeras and reported perceived sound motion and content. Results show that sensitivity to sound motion is not affected by speech intelligibility, but shows a clear difference for original noise and speech stimuli. Further, acoustic chimaera with speech-like ENVs which had intelligible content induced a strong bias in listeners to report sounds as stationary. Increasing stimulus intelligibility systematically increased that bias and removing intelligible content reduced it, suggesting that sound content may be prioritized over sound motion. These findings suggest that sound motion processing in the auditory system can be biased by acoustic parameters related to speech intelligibility. |
format | Online Article Text |
id | pubmed-8302594 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-83025942021-07-27 Signal envelope and speech intelligibility differentially impact auditory motion perception Warnecke, Michaela Litovsky, Ruth Y. Sci Rep Article Our acoustic environment contains a plethora of complex sounds that are often in motion. To gauge approaching danger and communicate effectively, listeners need to localize and identify sounds, which includes determining sound motion. This study addresses which acoustic cues impact listeners’ ability to determine sound motion. Signal envelope (ENV) cues are implicated in both sound motion tracking and stimulus intelligibility, suggesting that these processes could be competing for sound processing resources. We created auditory chimaera from speech and noise stimuli and varied the number of frequency bands, effectively manipulating speech intelligibility. Normal-hearing adults were presented with stationary or moving chimaeras and reported perceived sound motion and content. Results show that sensitivity to sound motion is not affected by speech intelligibility, but shows a clear difference for original noise and speech stimuli. Further, acoustic chimaera with speech-like ENVs which had intelligible content induced a strong bias in listeners to report sounds as stationary. Increasing stimulus intelligibility systematically increased that bias and removing intelligible content reduced it, suggesting that sound content may be prioritized over sound motion. These findings suggest that sound motion processing in the auditory system can be biased by acoustic parameters related to speech intelligibility. Nature Publishing Group UK 2021-07-23 /pmc/articles/PMC8302594/ /pubmed/34302032 http://dx.doi.org/10.1038/s41598-021-94662-y Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Warnecke, Michaela Litovsky, Ruth Y. Signal envelope and speech intelligibility differentially impact auditory motion perception |
title | Signal envelope and speech intelligibility differentially impact auditory motion perception |
title_full | Signal envelope and speech intelligibility differentially impact auditory motion perception |
title_fullStr | Signal envelope and speech intelligibility differentially impact auditory motion perception |
title_full_unstemmed | Signal envelope and speech intelligibility differentially impact auditory motion perception |
title_short | Signal envelope and speech intelligibility differentially impact auditory motion perception |
title_sort | signal envelope and speech intelligibility differentially impact auditory motion perception |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8302594/ https://www.ncbi.nlm.nih.gov/pubmed/34302032 http://dx.doi.org/10.1038/s41598-021-94662-y |
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