When is Vestibular Information Important During Walking?

Bent, Leah R., Inglis, J. Timothy and McFadyen, Bradford J. (2004) When is Vestibular Information Important During Walking?. Journal of neurophysiology, 92 3: 1269-1275. doi:10.1152/jn.01260.2003

Author Bent, Leah R.
Inglis, J. Timothy
McFadyen, Bradford J.
Title When is Vestibular Information Important During Walking?
Journal name Journal of neurophysiology   Check publisher's open access policy
ISSN 0022-3077
Publication date 2004-09
Sub-type Article (original research)
DOI 10.1152/jn.01260.2003
Volume 92
Issue 3
Start page 1269
End page 1275
Total pages 7
Place of publication Bethesda, MD, U.S. A.
Publisher American Physiological Society
Language eng
Subject 1109 Neurosciences
Abstract Locomotion relies on vision, somatosensory input, and vestibular information. Both vision and somatosensory signals have been shown to be phase dependently modulated during locomotion; however, the regulation of vestibular information has not been investigated in humans. By delivering galvanic vestibular stimulation (GVS) to subjects at either heel contact, mid-stance, or toe-off, it was possible to investigate when vestibular information was important during the gait cycle. The results indicated a difference in the vestibular regulation of upper versus lower body control. Upper body responses to GVS applied at different times did not differ in magnitude for the head (P = 0.2383), trunk (P = 0.1473), or pelvis (P = 0.1732) showing a similar dependence on vestibular information for upper body alignment across the gait cycle. In contrast, foot placement was dependent on the time when stimulation was delivered. Changes in foot placement were significantly larger at heel contact (during the double support phase) than when stimulation was delivered at mid-stance (in the single support phase of the gait cycle; P = 0.0193). These latter results demonstrate, for the first time, evidence of phase-dependent modulation of vestibular information during human walking.
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Health and Rehabilitation Sciences Publications
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