Document Detail


Preparatory EMG activity reveals a rapid adaptation pattern in humans performing landing movements in blindfolded condition.
MedLine Citation:
PMID:  20038004     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The main questions addressed in this work were whether and how adaptation to suppression of visual information occurs in a free-fall paradigm, and the extent to which vision availability influences the control of landing movements. The prelanding modulation of EMG timing and amplitude of four lower-limb muscles was investigated. Participants performed six consecutive drop-landings from four different heights in two experimental conditions: with and without vision. Experimental design precluded participants from estimating the height of the drop. Since cues provided by proprioceptive and vestibular information acquired during the first trials were processed, the nervous system rapidly adapted to the lack of visual information, and hence produced a motor output (i.e., prelanding EMG modulation) similar to that observed when performing the activity with vision available.
Authors:
Fernando Henrique Magalhães; Daniel Gustavo Goroso
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Perceptual and motor skills     Volume:  109     ISSN:  0031-5125     ISO Abbreviation:  Percept Mot Skills     Publication Date:  2009 Oct 
Date Detail:
Created Date:  2009-12-29     Completed Date:  2010-02-01     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401131     Medline TA:  Percept Mot Skills     Country:  United States    
Other Details:
Languages:  eng     Pagination:  500-16     Citation Subset:  IM    
Affiliation:
Neuroscience Program and Biomedical Engineering Laboratory, University of São Paulo, São Paulo, Brazil. fhmagalhaes@terra.com.br
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MeSH Terms
Descriptor/Qualifier:
Adult
Analysis of Variance
Cues*
Electromyography
Humans
Male
Motor Activity / physiology*
Movement / physiology
Postural Balance / physiology
Proprioception / physiology*
Psychomotor Performance / physiology*
Signal Processing, Computer-Assisted
Vision, Ocular / physiology
Visual Perception / physiology*
Weight-Bearing / physiology

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


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