Document Detail


Adaptation of multi-segmented body movements during vibratory proprioceptive and galvanic vestibular stimulation.
MedLine Citation:
PMID:  18219104     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Control of orthograde posture and use of adaptive adjustments constitutes essential topics of human movement control, both in maintenance of static posture and in ensuring body stability during locomotion. The objective was to investigate, in twelve normal subjects, how head, shoulder, hip and knee movements and torques induced towards the support surface were affected by vibratory proprioceptive and galvanic vestibular stimulation, and to investigate whether movement pattern, body posture and movement coordination were changed over time. Our findings suggest that the adaptive process to enhance stability involves both alteration of the multi-segmented movement pattern and alteration of body posture. The magnitude of the vibratory stimulation intensity had a prominent influence on the evoked multi-segmented movement pattern. The trial conditions also influenced whether the posture were altered and if these posture adjustments were done directly at stimulation onset or gradually over a longer period. Moreover, the correlation values showed that the subjects, primarily during trials with vibratory stimulation alone, significantly increased the body movement coordination at stimulation onset and maintained this movement pattern throughout the stimulation period. Furthermore, when exposed to balance perturbations the test subjects synchronized significantly the head and torso movements in anteroposterior direction during all trial conditions.
Authors:
Per-Anders Fransson; Magnus Hjerpe; Rolf Johansson
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of vestibular research : equilibrium & orientation     Volume:  17     ISSN:  0957-4271     ISO Abbreviation:  J Vestib Res     Publication Date:  2007  
Date Detail:
Created Date:  2008-01-25     Completed Date:  2008-03-18     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9104163     Medline TA:  J Vestib Res     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  47-62     Citation Subset:  IM; S    
Affiliation:
Department of Otorhinolaryngology Head and Neck surgery, Clinical Sciences, Lund, Lund University, S-221 85 Lund, Sweden. Per-Anders.Fransson@med.lu.se
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MeSH Terms
Descriptor/Qualifier:
Adaptation, Physiological
Adult
Electric Stimulation
Female
Humans
Male
Movement / physiology*
Orientation / physiology
Posture / physiology*
Proprioception / physiology*
Psychomotor Performance / physiology*
Reference Values
Statistics, Nonparametric
Vestibule, Labyrinth / physiology*
Vibration*

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


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