Galvanic vestibular stimulation in humans produces online arm movement deviations when reaching towards memorized visual targets. - Archive ouverte HAL Access content directly
Journal Articles Neuroscience Letters Year : 2002

Galvanic vestibular stimulation in humans produces online arm movement deviations when reaching towards memorized visual targets.

J. P. Bresciani
  • Function : Author
K. Popov
  • Function : Author
F. Sarlegna
Jean-Louis Vercher

Abstract

Using galvanic vestibular stimulation (GVS), we tested whether a change in vestibular input at the onset of goal-directed arm movements induces deviations in arm trajectory. Eight head-fixed standing subjects were instructed to reach for memorized visual targets in complete darkness. In half of the trials, randomly-selected, a 3 mA bipolar binaural galvanic stimulation of randomly alternating polarity was triggered by the movement onset. Results revealed significant GVS-induced directional shifts of reaching movements towards the anode side. The earliest significant deviations of hand path occurred 240 ms after stimulation onset. The likely goal of these online deviations of arm trajectory was to compensate for a vestibular-evoked apparent change in the spatial relationship between the target and the hand.

Domains

Psychology
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Dates and versions

hal-00947246 , version 1 (14-02-2014)

Identifiers

  • HAL Id : hal-00947246 , version 1
  • PUBMED : 11786219

Cite

J. P. Bresciani, Jean Blouin, K. Popov, C. Bourdin, F. Sarlegna, et al.. Galvanic vestibular stimulation in humans produces online arm movement deviations when reaching towards memorized visual targets.. Neuroscience Letters, 2002, 318 (1), pp.34-8. ⟨hal-00947246⟩
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