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Daily update of motor predictions by physical activity

Motor prediction, i.e., the ability to predict the sensory consequences of motor commands, is critical for adapted motor behavior. Like speed or force, the accuracy of motor prediction varies in a 24-hour basis. Although the prevailing view is that basic biological markers regulate this circadian mo...

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Autores principales: Gueugneau, Nicolas, Schweighofer, Nicolas, Papaxanthis, Charalambos
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4668580/
https://www.ncbi.nlm.nih.gov/pubmed/26632341
http://dx.doi.org/10.1038/srep17933
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author Gueugneau, Nicolas
Schweighofer, Nicolas
Papaxanthis, Charalambos
author_facet Gueugneau, Nicolas
Schweighofer, Nicolas
Papaxanthis, Charalambos
author_sort Gueugneau, Nicolas
collection PubMed
description Motor prediction, i.e., the ability to predict the sensory consequences of motor commands, is critical for adapted motor behavior. Like speed or force, the accuracy of motor prediction varies in a 24-hour basis. Although the prevailing view is that basic biological markers regulate this circadian modulation, behavioral factors such as physical activity, itself modulated by the alternation of night and day, can also regulate motor prediction. Here, we propose that physical activity updates motor prediction on a daily basis. We tested our hypothesis by up- and down-regulating physical activity via arm-immobilization and high-intensity training, respectively. Motor prediction was assessed by measuring the timing differences between actual and mental arm movements. Results show that although mental movement time was modulated during the day when the arm was unconstrained, it remained constant when the arm was immobilized. Additionally, increase of physical activity, via release from immobilization or intense bout of training, significantly reduced mental movement time. Finally, mental and actual times were similar in the afternoon in the unconstrained condition, indicating that predicted and actual movements match after sufficient amount of physical activity. Our study supports the view that physical activity calibrates motor predictions on a daily basis.
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spelling pubmed-46685802015-12-09 Daily update of motor predictions by physical activity Gueugneau, Nicolas Schweighofer, Nicolas Papaxanthis, Charalambos Sci Rep Article Motor prediction, i.e., the ability to predict the sensory consequences of motor commands, is critical for adapted motor behavior. Like speed or force, the accuracy of motor prediction varies in a 24-hour basis. Although the prevailing view is that basic biological markers regulate this circadian modulation, behavioral factors such as physical activity, itself modulated by the alternation of night and day, can also regulate motor prediction. Here, we propose that physical activity updates motor prediction on a daily basis. We tested our hypothesis by up- and down-regulating physical activity via arm-immobilization and high-intensity training, respectively. Motor prediction was assessed by measuring the timing differences between actual and mental arm movements. Results show that although mental movement time was modulated during the day when the arm was unconstrained, it remained constant when the arm was immobilized. Additionally, increase of physical activity, via release from immobilization or intense bout of training, significantly reduced mental movement time. Finally, mental and actual times were similar in the afternoon in the unconstrained condition, indicating that predicted and actual movements match after sufficient amount of physical activity. Our study supports the view that physical activity calibrates motor predictions on a daily basis. Nature Publishing Group 2015-12-03 /pmc/articles/PMC4668580/ /pubmed/26632341 http://dx.doi.org/10.1038/srep17933 Text en Copyright © 2015, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Gueugneau, Nicolas
Schweighofer, Nicolas
Papaxanthis, Charalambos
Daily update of motor predictions by physical activity
title Daily update of motor predictions by physical activity
title_full Daily update of motor predictions by physical activity
title_fullStr Daily update of motor predictions by physical activity
title_full_unstemmed Daily update of motor predictions by physical activity
title_short Daily update of motor predictions by physical activity
title_sort daily update of motor predictions by physical activity
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4668580/
https://www.ncbi.nlm.nih.gov/pubmed/26632341
http://dx.doi.org/10.1038/srep17933
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