HapticV1, PubMed, Corpus, bibRecord, 000943

State dependence of adaptation of force output following movement observation.

Identifieur interne : 000943 ( PubMed/Corpus ); précédent : 000942; suivant : 000944

State dependence of adaptation of force output following movement observation.

Auteurs : Paul A. Wanda ; Gang Li ; Kurt A. Thoroughman

Source :

Journal of neurophysiology [ 1522-1598 ] ; 2013.

RBID : pubmed:23761698

English descriptors

KwdEn :
- Adaptation, Physiological, Adolescent, Adult, Biomechanical Phenomena, Female, Humans, Learning (physiology), Male, Movement, Psychomotor Performance (physiology), Young Adult.
MESH :
- physiology : Learning, Psychomotor Performance.
- Adaptation, Physiological, Adolescent, Adult, Biomechanical Phenomena, Female, Humans, Male, Movement, Young Adult.

Abstract

Humans readily learn to move through direct physical practice and by watching the movements of others. Some researchers have proposed that action observation can inform subsequent changes in control through the acquisition of a neural representation of the novel dynamics, but to date learning following observation has been described by kinematic metrics. Here we designed an experiment to consider the specificity of adaptation to novel dynamic perturbations at the level of force generation. We measured changes in temporal patterns of force output following either the performance or observation of movements perturbed by either position- or velocity-dependent dynamic environments to 1) establish whether previously described observational motor learning effects were attributable to changes in predictive limb control and 2) determine whether such adaptation reflected a learned dependence on limb states appropriate to the haptic environment. We found that subjects who observed perturbed movements produced significant compensatory changes in their lateral force output, despite never directly experiencing force perturbations firsthand while performing the motor task. The time series of observers' adapted force outputs suggested that the state dependence of observed dynamics shapes adaptation. We conclude that the brain can transform observation of kinematics into state-dependent adaptation of reach dynamics.

DOI: 10.1152/jn.00353.2012
PubMed: 23761698

Links to Exploration step

pubmed:23761698

Le document en format XML

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<author><name sortKey="Wanda, Paul A" sort="Wanda, Paul A" uniqKey="Wanda P" first="Paul A" last="Wanda">Paul A. Wanda</name>
<affiliation><nlm:affiliation>Department of Biomedical Engineering, Washington University in Saint Louis, Saint Louis, MO 63130, USA.</nlm:affiliation>
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<author><name sortKey="Li, Gang" sort="Li, Gang" uniqKey="Li G" first="Gang" last="Li">Gang Li</name>
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<author><name sortKey="Thoroughman, Kurt A" sort="Thoroughman, Kurt A" uniqKey="Thoroughman K" first="Kurt A" last="Thoroughman">Kurt A. Thoroughman</name>
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<author><name sortKey="Li, Gang" sort="Li, Gang" uniqKey="Li G" first="Gang" last="Li">Gang Li</name>
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<author><name sortKey="Thoroughman, Kurt A" sort="Thoroughman, Kurt A" uniqKey="Thoroughman K" first="Kurt A" last="Thoroughman">Kurt A. Thoroughman</name>
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<front><div type="abstract" xml:lang="en">Humans readily learn to move through direct physical practice and by watching the movements of others. Some researchers have proposed that action observation can inform subsequent changes in control through the acquisition of a neural representation of the novel dynamics, but to date learning following observation has been described by kinematic metrics. Here we designed an experiment to consider the specificity of adaptation to novel dynamic perturbations at the level of force generation. We measured changes in temporal patterns of force output following either the performance or observation of movements perturbed by either position- or velocity-dependent dynamic environments to 1) establish whether previously described observational motor learning effects were attributable to changes in predictive limb control and 2) determine whether such adaptation reflected a learned dependence on limb states appropriate to the haptic environment. We found that subjects who observed perturbed movements produced significant compensatory changes in their lateral force output, despite never directly experiencing force perturbations firsthand while performing the motor task. The time series of observers' adapted force outputs suggested that the state dependence of observed dynamics shapes adaptation. We conclude that the brain can transform observation of kinematics into state-dependent adaptation of reach dynamics.</div>
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	Serveur d'exploration sur les dispositifs haptiques
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Serveur d'exploration sur les dispositifs haptiques

State dependence of adaptation of force output following movement observation.

State dependence of adaptation of force output following movement observation.

Source :

English descriptors

Abstract

Links to Exploration step

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