Modification of human postural response to leg muscle vibration by electrical vestibular stimulation

F. Hlavačka, M. Križková, F. B. Horak

Research output: Contribution to journalArticle

50 Scopus citations

Abstract

In order to understand proprioceptive and vestibular contributions to human stance posture, the effect of electrical vestibular stimulation on body lean induced by leg muscle vibration was investigated. The magnitudes and directions of postural responses were registered as changes in the center of foot pressure (COP) with a force platform. Vestibular stimulation consisted of 1 mA, binaural, bipolar galvanic current and proprioceptive input from tibialis anterior or soleus muscles was altered vibratory stimulation. The body lean induced by combined vibratory and galvanic stimulation could be largely considered as a summation of responses evoked by the galvanic and vibratory stimulation alone. The results of the present study showed that both vestibular and proprioceptive signals play important roles in the estimation of internal representation of body vertical.

Original languageEnglish (US)
Pages (from-to)9-12
Number of pages4
JournalNeuroscience Letters
Volume189
Issue number1
DOIs
StatePublished - Apr 7 1995

Keywords

  • Galvanic stimulation
  • Human posture
  • Interaction of sensory inputs
  • Proprioception
  • Vestibular system

ASJC Scopus subject areas

  • Neuroscience(all)

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