Document Detail


Congruent visual and proprioceptive information results in a better encoding of initial hand position.
MedLine Citation:
PMID:  21837439     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Goal-directed movements performed in a virtual environment pose serious challenges to the central nervous system because the visual and proprioceptive representations of one's hand position are not perfectly congruent. The aim of the present study was to determine whether the vision of one's hand or upper arm, compared with that of a cursor representing the tips of one's index finger and thumb, optimizes the planning and modulation of one's movement as the cursor nears the target. The participants performed manual aiming movements that differed by the source of static visual information available during movement planning and the source of dynamic information available during movement execution. The results revealed that the vision of one's hand during the movement planning phase results in more efficient online control processes than when the movement planning was based on a virtual representation of one's initial hand location. This observation was seen regardless of the availability of online visual feedback during movement execution. These results suggest that a more reliable estimation of the initial hand position results in more accurate estimation of the position of the cursor/hand at any one time resulting in more accurate online control.
Authors:
Louis-Nicolas Veilleux; Luc Proteau
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Publication Detail:
Type:  Comparative Study; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't     Date:  2011-08-12
Journal Detail:
Title:  Experimental brain research     Volume:  214     ISSN:  1432-1106     ISO Abbreviation:  Exp Brain Res     Publication Date:  2011 Oct 
Date Detail:
Created Date:  2011-09-16     Completed Date:  2012-06-26     Revised Date:  2013-12-13    
Medline Journal Info:
Nlm Unique ID:  0043312     Medline TA:  Exp Brain Res     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  215-24     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Adult
Hand / physiology*
Humans
Motion Perception / physiology*
Movement / physiology*
Photic Stimulation / methods*
Proprioception / physiology*
Psychomotor Performance / physiology*
Young Adult

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


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