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Vestibular stimulation perturbs human stance also at higher frequencies

Petersen, H; Magnusson, M LU ; Fransson, P A LU and Johansson, Rolf LU (1995) In Acta Oto-Laryngologica, Supplement 520 Pt 2. p.6-443
Abstract

The effect of primary vestibular disturbance on postural control was investigated in 11 normal subjects exposed to perturbation by bi-polar binaural galvanic stimulation of the vestibular nerve. The stimulus consisted of 30 s of sinusoidal galvanic stimulation at frequencies of 0.2, 0.3, 0.5, 1.0, 1.5, 2.0, 3.0 and 4.0 Hz, with a current of +/- 1 mA, the subject standing with open or closed eyes and the response evoked being recorded with a force platform. As compared with resting values, i.e. no stimuli, variance of lateral body sway was significantly greater at all frequencies tested in the closed eyes condition and at frequencies of 0.2, 0.5, 1.0, 3.0 and 4.0 Hz in the open eyes condition; using a high pass filter with a cut-off... (More)

The effect of primary vestibular disturbance on postural control was investigated in 11 normal subjects exposed to perturbation by bi-polar binaural galvanic stimulation of the vestibular nerve. The stimulus consisted of 30 s of sinusoidal galvanic stimulation at frequencies of 0.2, 0.3, 0.5, 1.0, 1.5, 2.0, 3.0 and 4.0 Hz, with a current of +/- 1 mA, the subject standing with open or closed eyes and the response evoked being recorded with a force platform. As compared with resting values, i.e. no stimuli, variance of lateral body sway was significantly greater at all frequencies tested in the closed eyes condition and at frequencies of 0.2, 0.5, 1.0, 3.0 and 4.0 Hz in the open eyes condition; using a high pass filter with a cut-off frequency of 0.1 Hz, variance of lateral body sway was significantly greater at frequencies 0.2, 0.3, 0.5, 1.0 and 2.0 Hz in the closed eyes condition and at frequencies 0.5 and 2.0 Hz in the open eyes condition. These findings suggest that in the lateral plane vestibular input affects and probably contributes to human postural control over a wider frequency range than suggested by findings in previous studies. Moreover, the visual contribution appears to enable the subject to suppress vestibular input causing lateral body sway only in the lower frequency range (here at 0.2 and 0.3 Hz). This evidence of vestibular contribution to postural control in the lateral plane is consistent with the response characteristics of the vestibulo-ocular reflex.

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Contribution to journal
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published
subject
keywords
Adolescent, Adult, Female, Functional Laterality, Gravitation, Humans, Male, Middle Aged, Otolithic Membrane, Postural Balance, Posture, Reference Values, Reflex, Vestibulo-Ocular, Semicircular Canals, Vestibular Nerve, Journal Article
in
Acta Oto-Laryngologica, Supplement
volume
520 Pt 2
pages
4 pages
publisher
Scandinavian University Press
external identifiers
  • scopus:0038215023
ISSN
0365-5237
language
English
LU publication?
yes
id
1f427369-19c6-445f-af31-4fc30e0c0de7
date added to LUP
2017-05-03 12:29:52
date last changed
2017-09-09 08:33:50
@article{1f427369-19c6-445f-af31-4fc30e0c0de7,
  abstract     = {<p>The effect of primary vestibular disturbance on postural control was investigated in 11 normal subjects exposed to perturbation by bi-polar binaural galvanic stimulation of the vestibular nerve. The stimulus consisted of 30 s of sinusoidal galvanic stimulation at frequencies of 0.2, 0.3, 0.5, 1.0, 1.5, 2.0, 3.0 and 4.0 Hz, with a current of +/- 1 mA, the subject standing with open or closed eyes and the response evoked being recorded with a force platform. As compared with resting values, i.e. no stimuli, variance of lateral body sway was significantly greater at all frequencies tested in the closed eyes condition and at frequencies of 0.2, 0.5, 1.0, 3.0 and 4.0 Hz in the open eyes condition; using a high pass filter with a cut-off frequency of 0.1 Hz, variance of lateral body sway was significantly greater at frequencies 0.2, 0.3, 0.5, 1.0 and 2.0 Hz in the closed eyes condition and at frequencies 0.5 and 2.0 Hz in the open eyes condition. These findings suggest that in the lateral plane vestibular input affects and probably contributes to human postural control over a wider frequency range than suggested by findings in previous studies. Moreover, the visual contribution appears to enable the subject to suppress vestibular input causing lateral body sway only in the lower frequency range (here at 0.2 and 0.3 Hz). This evidence of vestibular contribution to postural control in the lateral plane is consistent with the response characteristics of the vestibulo-ocular reflex.</p>},
  author       = {Petersen, H and Magnusson, M and Fransson, P A and Johansson, Rolf},
  issn         = {0365-5237},
  keyword      = {Adolescent,Adult,Female,Functional Laterality,Gravitation,Humans,Male,Middle Aged,Otolithic Membrane,Postural Balance,Posture,Reference Values,Reflex, Vestibulo-Ocular,Semicircular Canals,Vestibular Nerve,Journal Article},
  language     = {eng},
  pages        = {6--443},
  publisher    = {Scandinavian University Press},
  series       = {Acta Oto-Laryngologica, Supplement},
  title        = {Vestibular stimulation perturbs human stance also at higher frequencies},
  volume       = {520 Pt 2},
  year         = {1995},
}