HapticV1, Main, Merge, bibRecord, 001852

State dependence of adaptation of force output following movement observation

Identifieur interne : 001852 ( Main/Merge ); précédent : 001851; suivant : 001853

State dependence of adaptation of force output following movement observation

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

Source :

Journal of Neurophysiology [ 0022-3077 ] ; 2013.

RBID : PMC:3763093

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.

Url:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3763093

DOI: 10.1152/jn.00353.2012
PubMed: 23761698
PubMed Central: 3763093

Links to Exploration step

PMC:3763093

Le document en format XML

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<front><div type="abstract" xml:lang="en"><p>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 <italic>1</italic>
) establish whether previously described observational motor learning effects were attributable to changes in predictive limb control and <italic>2</italic>
) 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.</p>
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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 toward previous steps (curation, corpus...)

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

Pour générer des pages wiki

	Serveur d'exploration sur les dispositifs haptiques
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