Document Detail

Is interlimb transfer of force-field adaptation a cognitive response to the sudden introduction of load?
MedLine Citation:
PMID:  15371509     Owner:  NLM     Status:  MEDLINE    
Recently, Criscimagna-Hemminger et al. (2003) reported a pattern of generalization of force-field adaptation between arms that differs from the pattern that occurs across different configurations of the same arm. Although the intralimb pattern of generalization points to an intrinsic encoding of dynamics, the interlimb transfer described by these authors indicates that information about force is represented in a frame of reference external to the body. In the present study, subjects adapted to a viscous curl-field in two experimental conditions. In one condition, the field was introduced suddenly and produced clear deviations in hand paths; in the second condition, the field was introduced gradually so that at no point during the adaptation process could subjects observe or did they have to correct for a substantial kinematic error. In the first case, a pattern of interlimb transfer consistent with Criscimagna-Hemminger et al. (2003) was observed, whereas no transfer of learning between limbs occurred in the second condition. The findings suggest that there is limited transfer of fine compensatory-force adjustment between limbs. Transfer, when it does occur, may be primarily the result of a cognitive strategy that arises as a result of the sudden introduction of load and associated kinematic error.
Nicole Malfait; David J Ostry
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  The Journal of neuroscience : the official journal of the Society for Neuroscience     Volume:  24     ISSN:  1529-2401     ISO Abbreviation:  J. Neurosci.     Publication Date:  2004 Sep 
Date Detail:
Created Date:  2004-09-16     Completed Date:  2005-05-17     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8102140     Medline TA:  J Neurosci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  8084-9     Citation Subset:  IM    
Department of Psychology, McGill University, Montreal, Quebec H3A 1B1, Canada.
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MeSH Terms
Adaptation, Physiological*
Arm / physiology*
Functional Laterality
Hand / physiology
Motor Activity / physiology
Psychomotor Performance
Spatial Behavior
Weight-Bearing / physiology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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