Linked Life Data

20599471

Source:http://linkedlifedata.com/resource/pubmed/id/20599471

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2010-8-9
pubmed:abstractText
In this experiment, we examined the extent to which postural control is influenced by visual and cognitive task performance. Fourteen healthy young participants performed a balance task in eyes-open (EO) and delayed visual feedback (DVF) conditions. DVF was presented at delays ranging from 0 to 1200ms in 300ms increments. Cognitive load was implemented by a simple, serial arithmetic task. High and low-pass filtering (f(c)=0.3Hz) distinguished LOW and HIGH frequency components, which were used to compute the variability of Anteroposterior (AP) Center of Pressure (COP) trajectories on fast (>0.3Hz) and slow (<0.3Hz) times cales. Imposed visual delay increased sway variability at both LOW and HIGH components. Cognitive task performance, however, influenced only the variability of fast (HIGH) sway components. Our results support distinct timescale mechanisms for postural control, but also demonstrate that vision predominantly influences low frequency components of postural sway. Moment-to-moment COP fluctuations are dependent on cognitive performance during delayed visual feedback postural control.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
1872-7972
pubmed:author
pubmed:copyrightInfo
Copyright 2010 Elsevier Ireland Ltd. All rights reserved.
pubmed:issnType
Electronic
pubmed:day
13
pubmed:volume
481
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
173-7
pubmed:meshHeading
pubmed:year
2010
pubmed:articleTitle
Contributions of delayed visual feedback and cognitive task load to postural dynamics.
pubmed:affiliation
Sensorimotor Neuroscience Laboratory, Department of Kinesiology, McMaster University, Hamilton, ON, Canada L8S 4K1.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't