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Adaptation of multi-segmented body movements during vibratory proprioceptive and galvanic vestibular stimulation.

Fransson, Per-Anders LU ; Hjerpe, Magnus and Johansson, Rolf LU (2007) In Journal of Vestibular Research 17(1). p.47-62
Abstract
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... (More)
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. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Vestibular Research
volume
17
issue
1
pages
47 - 62
publisher
IOS Press
external identifiers
  • pmid:18219104
  • wos:000253092100006
  • scopus:38349171161
ISSN
1878-6464
language
English
LU publication?
yes
id
c59468df-8fee-4017-8e46-57281f9a7893 (old id 1021114)
alternative location
http://www.ncbi.nlm.nih.gov/pubmed/18219104?dopt=Abstract
date added to LUP
2008-02-08 15:55:03
date last changed
2017-08-27 05:32:24
@article{c59468df-8fee-4017-8e46-57281f9a7893,
  abstract     = {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.},
  author       = {Fransson, Per-Anders and Hjerpe, Magnus and Johansson, Rolf},
  issn         = {1878-6464},
  language     = {eng},
  number       = {1},
  pages        = {47--62},
  publisher    = {IOS Press},
  series       = {Journal of Vestibular Research},
  title        = {Adaptation of multi-segmented body movements during vibratory proprioceptive and galvanic vestibular stimulation.},
  volume       = {17},
  year         = {2007},
}