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Direction of galvanically-induced vestibulo-postural responses during active and passive neck torsion

Fransson, Per-Anders LU ; Karlberg, Mikael LU ; Sterner, T and Magnusson, Måns LU (2000) In Acta Oto-Laryngologica 120(4). p.500-503
Abstract
The direction of a postural response induced by galvanic vestibular stimulation depends on the head and trunk position. The relative importance of afferent information (proprioception) and efferent motor command/corollary discharge is unknown. We studied the direction of body sway evoked by galvanic vestibular stimulation in 9 healthy subjects during active and passive head positioning at 0 degrees frontal position, 35 degrees to the left, and 75 degrees to the right, using a custom-built collar. At 0 degrees and 75 degrees there were no significant differences in sway direction between active and passive head positioning. The galvanic stimulation invoked sway toward the anode, mainly in the inter-aural direction. The sway direction... (More)
The direction of a postural response induced by galvanic vestibular stimulation depends on the head and trunk position. The relative importance of afferent information (proprioception) and efferent motor command/corollary discharge is unknown. We studied the direction of body sway evoked by galvanic vestibular stimulation in 9 healthy subjects during active and passive head positioning at 0 degrees frontal position, 35 degrees to the left, and 75 degrees to the right, using a custom-built collar. At 0 degrees and 75 degrees there were no significant differences in sway direction between active and passive head positioning. The galvanic stimulation invoked sway toward the anode, mainly in the inter-aural direction. The sway direction differed significantly between active and passive positioning at 35 degrees to the side (p < 0.05). When the head was actively kept in this position, the body sway was mainly in an inter-aural direction. The sway shifted to a naso-occipital direction when the head was passively positioned at 35 degrees. Our results indicate that the afferent proprioceptive information has the largest influence on the direction of the galvanically-induced postural response, although some dependence on efferent motor commands and non-linear cervical proprioception cannot be ruled out entirely. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
corollary discharge, human, proprioception, 6estibular
in
Acta Oto-Laryngologica
volume
120
issue
4
pages
500 - 503
publisher
Taylor & Francis
external identifiers
  • pmid:10958401
  • scopus:0034580379
ISSN
1651-2251
DOI
10.1080/000164800750045992
language
English
LU publication?
yes
id
3aa5dbf8-c644-459d-b8b8-f68c61d27242 (old id 1116522)
date added to LUP
2008-07-01 14:14:53
date last changed
2017-02-12 04:07:45
@article{3aa5dbf8-c644-459d-b8b8-f68c61d27242,
  abstract     = {The direction of a postural response induced by galvanic vestibular stimulation depends on the head and trunk position. The relative importance of afferent information (proprioception) and efferent motor command/corollary discharge is unknown. We studied the direction of body sway evoked by galvanic vestibular stimulation in 9 healthy subjects during active and passive head positioning at 0 degrees frontal position, 35 degrees to the left, and 75 degrees to the right, using a custom-built collar. At 0 degrees and 75 degrees there were no significant differences in sway direction between active and passive head positioning. The galvanic stimulation invoked sway toward the anode, mainly in the inter-aural direction. The sway direction differed significantly between active and passive positioning at 35 degrees to the side (p &lt; 0.05). When the head was actively kept in this position, the body sway was mainly in an inter-aural direction. The sway shifted to a naso-occipital direction when the head was passively positioned at 35 degrees. Our results indicate that the afferent proprioceptive information has the largest influence on the direction of the galvanically-induced postural response, although some dependence on efferent motor commands and non-linear cervical proprioception cannot be ruled out entirely.},
  author       = {Fransson, Per-Anders and Karlberg, Mikael and Sterner, T and Magnusson, Måns},
  issn         = {1651-2251},
  keyword      = {corollary discharge,human,proprioception,6estibular},
  language     = {eng},
  number       = {4},
  pages        = {500--503},
  publisher    = {Taylor & Francis},
  series       = {Acta Oto-Laryngologica},
  title        = {Direction of galvanically-induced vestibulo-postural responses during active and passive neck torsion},
  url          = {http://dx.doi.org/10.1080/000164800750045992},
  volume       = {120},
  year         = {2000},
}