Cargando…
Feedback Adaptation to Unpredictable Force Fields in 250 ms
Motor learning and adaptation are important functions of the nervous system. Classical studies have characterized how humans adapt to changes in the environment during tasks such as reaching, and have documented improvements in behavior across movements. However, little is known about how quickly th...
Autores principales: | , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Society for Neuroscience
2020
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7196721/ https://www.ncbi.nlm.nih.gov/pubmed/32317344 http://dx.doi.org/10.1523/ENEURO.0400-19.2020 |
_version_ | 1783528765786161152 |
---|---|
author | Crevecoeur, Frédéric Mathew, James Bastin, Marie Lefèvre, Philippe |
author_facet | Crevecoeur, Frédéric Mathew, James Bastin, Marie Lefèvre, Philippe |
author_sort | Crevecoeur, Frédéric |
collection | PubMed |
description | Motor learning and adaptation are important functions of the nervous system. Classical studies have characterized how humans adapt to changes in the environment during tasks such as reaching, and have documented improvements in behavior across movements. However, little is known about how quickly the nervous system adapts to such disturbances. In particular, recent work has suggested that adaptation could be sufficiently fast to alter the control strategies of an ongoing movement. To further address the possibility that learning occurred within a single movement, we designed a series of human reaching experiments to extract from muscles recordings the latency of feedback adaptation. Our results confirmed that participants adapted their feedback responses to unanticipated force fields applied randomly. In addition, our analyses revealed that the feedback response was specifically and finely tuned to the ongoing perturbation not only across trials with the same force field, but also across different kinds of force fields. Finally, changes in muscle activity consistent with feedback adaptation occurred in ∼250 ms following reach onset. The adaptation that we observed across trials presented in a random context was similar to the one observed when the force fields could be anticipated, suggesting that these two adaptive processes may be closely linked to each other. In such case, our measurement of 250 ms may correspond to the latency of motor adaptation in the nervous system. |
format | Online Article Text |
id | pubmed-7196721 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Society for Neuroscience |
record_format | MEDLINE/PubMed |
spelling | pubmed-71967212020-05-04 Feedback Adaptation to Unpredictable Force Fields in 250 ms Crevecoeur, Frédéric Mathew, James Bastin, Marie Lefèvre, Philippe eNeuro Research Article: New Research Motor learning and adaptation are important functions of the nervous system. Classical studies have characterized how humans adapt to changes in the environment during tasks such as reaching, and have documented improvements in behavior across movements. However, little is known about how quickly the nervous system adapts to such disturbances. In particular, recent work has suggested that adaptation could be sufficiently fast to alter the control strategies of an ongoing movement. To further address the possibility that learning occurred within a single movement, we designed a series of human reaching experiments to extract from muscles recordings the latency of feedback adaptation. Our results confirmed that participants adapted their feedback responses to unanticipated force fields applied randomly. In addition, our analyses revealed that the feedback response was specifically and finely tuned to the ongoing perturbation not only across trials with the same force field, but also across different kinds of force fields. Finally, changes in muscle activity consistent with feedback adaptation occurred in ∼250 ms following reach onset. The adaptation that we observed across trials presented in a random context was similar to the one observed when the force fields could be anticipated, suggesting that these two adaptive processes may be closely linked to each other. In such case, our measurement of 250 ms may correspond to the latency of motor adaptation in the nervous system. Society for Neuroscience 2020-04-29 /pmc/articles/PMC7196721/ /pubmed/32317344 http://dx.doi.org/10.1523/ENEURO.0400-19.2020 Text en Copyright © 2020 Crevecoeur et al. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International license (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution and reproduction in any medium provided that the original work is properly attributed. |
spellingShingle | Research Article: New Research Crevecoeur, Frédéric Mathew, James Bastin, Marie Lefèvre, Philippe Feedback Adaptation to Unpredictable Force Fields in 250 ms |
title | Feedback Adaptation to Unpredictable Force Fields in 250 ms |
title_full | Feedback Adaptation to Unpredictable Force Fields in 250 ms |
title_fullStr | Feedback Adaptation to Unpredictable Force Fields in 250 ms |
title_full_unstemmed | Feedback Adaptation to Unpredictable Force Fields in 250 ms |
title_short | Feedback Adaptation to Unpredictable Force Fields in 250 ms |
title_sort | feedback adaptation to unpredictable force fields in 250 ms |
topic | Research Article: New Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7196721/ https://www.ncbi.nlm.nih.gov/pubmed/32317344 http://dx.doi.org/10.1523/ENEURO.0400-19.2020 |
work_keys_str_mv | AT crevecoeurfrederic feedbackadaptationtounpredictableforcefieldsin250ms AT mathewjames feedbackadaptationtounpredictableforcefieldsin250ms AT bastinmarie feedbackadaptationtounpredictableforcefieldsin250ms AT lefevrephilippe feedbackadaptationtounpredictableforcefieldsin250ms |