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Experimental Brain Research
Erschienen in: Experimental Brain Research 3/2003

01.06.2003 | Research Article

Movement sway: changes in postural sway during voluntary shifts of the center of pressure

verfasst von: Mark L. Latash, Sandra S. Ferreira, Silvana A. Wieczorek, Marcos Duarte

Erschienen in: Experimental Brain Research | Ausgabe 3/2003

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Abstract

We introduce a method for quantification of movement sway—spontaneous migrations of the center of pressure (COP) during its voluntary shifts. Subjects stood on a force platform or on a board with a narrow support surface ("unstable board") and performed voluntary cyclic shifts of the COP at different frequencies. Movement sway was typically higher than postural sway; sway in the mediolateral direction was particularly increased. Movement sway showed a drop with the frequency of voluntary COP shifts. During standing on the unstable board, postural sway increased while movement sway decreased. The effects of task parameters were stronger on the sway component in the direction of the voluntary COP shift than in the orthogonal direction. We interpret changes in movement sway with task parameters as partly resulting from modulation of the search function of sway during voluntary COP shifts.
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Metadaten
Titel
Movement sway: changes in postural sway during voluntary shifts of the center of pressure
verfasst von
Mark L. Latash
Sandra S. Ferreira
Silvana A. Wieczorek
Marcos Duarte
Publikationsdatum
01.06.2003
Verlag
Springer-Verlag
Erschienen in
Experimental Brain Research / Ausgabe 3/2003
Print ISSN: 0014-4819
Elektronische ISSN: 1432-1106
DOI
https://doi.org/10.1007/s00221-003-1419-3

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