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Timing variability of sensorimotor integration during vocalization in individuals who stutter
Persistent developmental stuttering affects close to 1% of adults and is thought to be a problem of sensorimotor integration. Previous research has demonstrated that individuals who stutter respond differently to changes in their auditory feedback while speaking. Here we explore a number of changes...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6218511/ https://www.ncbi.nlm.nih.gov/pubmed/30397215 http://dx.doi.org/10.1038/s41598-018-34517-1 |
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author | Sares, Anastasia G. Deroche, Mickael L. D. Shiller, Douglas M. Gracco, Vincent L. |
author_facet | Sares, Anastasia G. Deroche, Mickael L. D. Shiller, Douglas M. Gracco, Vincent L. |
author_sort | Sares, Anastasia G. |
collection | PubMed |
description | Persistent developmental stuttering affects close to 1% of adults and is thought to be a problem of sensorimotor integration. Previous research has demonstrated that individuals who stutter respond differently to changes in their auditory feedback while speaking. Here we explore a number of changes that accompany alterations in the feedback of pitch during vocal production. Participants sustained the vowel /a/ while hearing on-line feedback of their own voice through headphones. In some trials, feedback was briefly shifted up or down by 100 cents to simulate a vocal production error. As previously shown, participants compensated for the auditory pitch change by altering their vocal production in the opposite direction of the shift. The average compensatory response was smaller for adults who stuttered than for adult controls. Detailed analyses revealed that adults who stuttered had fewer trials with a robust corrective response, and that within the trials showing compensation, the timing of their responses was more variable. These results support the idea that dysfunctional sensorimotor integration in stuttering is characterized by timing variability, reflecting reduced coupling of the auditory and speech motor systems. |
format | Online Article Text |
id | pubmed-6218511 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-62185112018-11-07 Timing variability of sensorimotor integration during vocalization in individuals who stutter Sares, Anastasia G. Deroche, Mickael L. D. Shiller, Douglas M. Gracco, Vincent L. Sci Rep Article Persistent developmental stuttering affects close to 1% of adults and is thought to be a problem of sensorimotor integration. Previous research has demonstrated that individuals who stutter respond differently to changes in their auditory feedback while speaking. Here we explore a number of changes that accompany alterations in the feedback of pitch during vocal production. Participants sustained the vowel /a/ while hearing on-line feedback of their own voice through headphones. In some trials, feedback was briefly shifted up or down by 100 cents to simulate a vocal production error. As previously shown, participants compensated for the auditory pitch change by altering their vocal production in the opposite direction of the shift. The average compensatory response was smaller for adults who stuttered than for adult controls. Detailed analyses revealed that adults who stuttered had fewer trials with a robust corrective response, and that within the trials showing compensation, the timing of their responses was more variable. These results support the idea that dysfunctional sensorimotor integration in stuttering is characterized by timing variability, reflecting reduced coupling of the auditory and speech motor systems. Nature Publishing Group UK 2018-11-05 /pmc/articles/PMC6218511/ /pubmed/30397215 http://dx.doi.org/10.1038/s41598-018-34517-1 Text en © The Author(s) 2018 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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Sares, Anastasia G. Deroche, Mickael L. D. Shiller, Douglas M. Gracco, Vincent L. Timing variability of sensorimotor integration during vocalization in individuals who stutter |
title | Timing variability of sensorimotor integration during vocalization in individuals who stutter |
title_full | Timing variability of sensorimotor integration during vocalization in individuals who stutter |
title_fullStr | Timing variability of sensorimotor integration during vocalization in individuals who stutter |
title_full_unstemmed | Timing variability of sensorimotor integration during vocalization in individuals who stutter |
title_short | Timing variability of sensorimotor integration during vocalization in individuals who stutter |
title_sort | timing variability of sensorimotor integration during vocalization in individuals who stutter |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6218511/ https://www.ncbi.nlm.nih.gov/pubmed/30397215 http://dx.doi.org/10.1038/s41598-018-34517-1 |
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