The direction of postural instability affects postural reactions to ankle muscle vibration in humans

Y. P. Ivanenko, I. A. Solopova, Y. S. Levik

Research output: Contribution to journalArticlepeer-review

Abstract

Postural instability changes the weighting of different types of sensory information and the state of the equilibrium maintenance system. We have recently found that the effect of Achilles tendon vibration (so-called 'vibration-induced falling') strongly diminishes during unstable posture. However, it is unclear whether the state of postural instability has directionally specific or non-specific effects on the attenuation of proprioceptive influences from ankle muscles. To check this hypothesis, we varied the direction of support mobility and applied shank muscle vibration to subjects standing on a rocking platform movable in the sagittal, frontal or both directions. Postural reactions were present only on those supports that were stable in the sagittal direction. We suggest that the direction of postural instability affects information processing from ankle muscle receptors. Copyright (C) 2000 Elsevier Science Ireland Ltd.

Original languageEnglish
Pages (from-to)103-106
Number of pages4
JournalNeuroscience Letters
Volume292
Issue number2
DOIs
Publication statusPublished - Oct 6 2000

Keywords

  • Equilibrium
  • Movable support
  • Muscle vibration
  • Postural reference
  • Unstable posture

ASJC Scopus subject areas

  • Neuroscience(all)

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