Neuronal mechanisms of voice control are affected by implicit expectancy of externally triggered perturbations in auditory feedback.
Accurate vocal production relies on several factors including sensory feedback and the ability to predict future challenges to the control processes. Repetitive patterns of perturbations in sensory feedback by themselves elicit implicit expectations in the vocal control system regarding the timing,...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2012-01-01
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| Series: | PLoS ONE |
| Online Access: | http://europepmc.org/articles/PMC3398890?pdf=render |
| _version_ | 1818036038821478400 |
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| author | Oleg Korzyukov Lindsey Sattler Roozbeh Behroozmand Charles R Larson |
| author_facet | Oleg Korzyukov Lindsey Sattler Roozbeh Behroozmand Charles R Larson |
| author_sort | Oleg Korzyukov |
| collection | DOAJ |
| description | Accurate vocal production relies on several factors including sensory feedback and the ability to predict future challenges to the control processes. Repetitive patterns of perturbations in sensory feedback by themselves elicit implicit expectations in the vocal control system regarding the timing, quality and direction of perturbations. In the present study, the predictability of voice pitch-shifted auditory feedback was experimentally manipulated. A block of trials where all pitch-shift stimuli were upward, and therefore predictable was contrasted against an unpredictable block of trials in which the stimulus direction was randomized between upward and downward pitch-shifts. It was found that predictable perturbations in voice auditory feedback led to a reduction in the proportion of compensatory vocal responses, which might be indicative of a reduction in vocal control. The predictable perturbations also led to a reduction in the magnitude of the N1 component of cortical Event Related Potentials (ERP) that was associated with the reflexive compensations to the perturbations. We hypothesize that formation of expectancy in our study is accompanied by involuntary allocation of attentional resources occurring as a result of habituation or learning, that in turn trigger limited and controlled exploration-related motor variability in the vocal control system. |
| first_indexed | 2024-12-10T07:04:36Z |
| format | Article |
| id | doaj.art-2efd86e23ece4c6ba6ba5022859aa72a |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-10T07:04:36Z |
| publishDate | 2012-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-2efd86e23ece4c6ba6ba5022859aa72a2022-12-22T01:58:12ZengPublic Library of Science (PLoS)PLoS ONE1932-62032012-01-0177e4121610.1371/journal.pone.0041216Neuronal mechanisms of voice control are affected by implicit expectancy of externally triggered perturbations in auditory feedback.Oleg KorzyukovLindsey SattlerRoozbeh BehroozmandCharles R LarsonAccurate vocal production relies on several factors including sensory feedback and the ability to predict future challenges to the control processes. Repetitive patterns of perturbations in sensory feedback by themselves elicit implicit expectations in the vocal control system regarding the timing, quality and direction of perturbations. In the present study, the predictability of voice pitch-shifted auditory feedback was experimentally manipulated. A block of trials where all pitch-shift stimuli were upward, and therefore predictable was contrasted against an unpredictable block of trials in which the stimulus direction was randomized between upward and downward pitch-shifts. It was found that predictable perturbations in voice auditory feedback led to a reduction in the proportion of compensatory vocal responses, which might be indicative of a reduction in vocal control. The predictable perturbations also led to a reduction in the magnitude of the N1 component of cortical Event Related Potentials (ERP) that was associated with the reflexive compensations to the perturbations. We hypothesize that formation of expectancy in our study is accompanied by involuntary allocation of attentional resources occurring as a result of habituation or learning, that in turn trigger limited and controlled exploration-related motor variability in the vocal control system.http://europepmc.org/articles/PMC3398890?pdf=render |
| spellingShingle | Oleg Korzyukov Lindsey Sattler Roozbeh Behroozmand Charles R Larson Neuronal mechanisms of voice control are affected by implicit expectancy of externally triggered perturbations in auditory feedback. PLoS ONE |
| title | Neuronal mechanisms of voice control are affected by implicit expectancy of externally triggered perturbations in auditory feedback. |
| title_full | Neuronal mechanisms of voice control are affected by implicit expectancy of externally triggered perturbations in auditory feedback. |
| title_fullStr | Neuronal mechanisms of voice control are affected by implicit expectancy of externally triggered perturbations in auditory feedback. |
| title_full_unstemmed | Neuronal mechanisms of voice control are affected by implicit expectancy of externally triggered perturbations in auditory feedback. |
| title_short | Neuronal mechanisms of voice control are affected by implicit expectancy of externally triggered perturbations in auditory feedback. |
| title_sort | neuronal mechanisms of voice control are affected by implicit expectancy of externally triggered perturbations in auditory feedback |
| url | http://europepmc.org/articles/PMC3398890?pdf=render |
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