Citation

Magalhães FH, Goroso DG. Percept. Mot. Skills 2009; 109(2): 500-516.

Affiliation

Neuroscience Program and Biomedical Engineering Laboratory, University of São Paulo, São Paulo, Brazil. fhmagalhaes@terra.com.br

Copyright

(Copyright © 2009, SAGE Publishing)

DOI

unavailable

PMID

20038004

Abstract

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.

Language: en