Document Detail


Lateral balance organisation in human stance in response to a random or predictable perturbation.
MedLine Citation:
PMID:  9928835     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The effect of the predictability of perturbation to standing balance was evaluated in terms of the muscle activity and response dynamics of five subjects exposed to horizontal forces at the pelvis producing sideways or forward sway. Rapid (EMG onset latencies of 70-80 ms recorded from the left gluteus medius and gastrocnemius) and qualitatively different patterns of response were produced by forward pushes and pushes to either side. However, the EMG response to left push was constant in pattern and timing, whether the push direction was constant and, therefore, predictable over a block of trials or whether the left push trials were interleaved randomly with right push or forward push trials. Moreover, there were no systematic effects of perturbation direction uncertainty on the latency and rate of increase of ground reaction forces. We conclude that prior information does not speed postural responses that differ quantitatively according to the direction of perturbation to balance.
Authors:
M Gilles; A M Wing; S G Kirker
Related Documents :
8848975 - Neuroanatomical and neurophysiological bases of postural control.
10603425 - Postural adjustment response to depth direction moving patterns produced by virtual rea...
2350695 - Kinematic properties of voluntary postural sway in patients with unilateral primary hem...
8749185 - Vestibular stimulation perturbs human stance also at higher frequencies.
22071765 - Electrically driven directional motion of a four-wheeled molecule on a metal surface.
19399135 - Exceptionally efficient organic light emitting devices using high refractive index subs...
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Experimental brain research     Volume:  124     ISSN:  0014-4819     ISO Abbreviation:  Exp Brain Res     Publication Date:  1999 Jan 
Date Detail:
Created Date:  1999-03-29     Completed Date:  1999-03-29     Revised Date:  2013-12-13    
Medline Journal Info:
Nlm Unique ID:  0043312     Medline TA:  Exp Brain Res     Country:  GERMANY    
Other Details:
Languages:  eng     Pagination:  137-44     Citation Subset:  IM; S    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Adult
Electromyography
Female
Humans
Male
Muscle, Skeletal / physiology*
Postural Balance / physiology*
Posture / physiology
Predictive Value of Tests
Reaction Time / physiology
Torque

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


Previous Document:  Can secondary degeneration accelerate the formation of neurofibrillary tangles? A case of hemispheri...
Next Document:  Estimation of PC12 cell numbers with acid phosphatase assay and mitochondrial dehydrogenase assay: d...