Zur bedeutung des menschlichen kleinhirns fur die anpassung posturaler reflexmuster an wechselnde breiten der standflache: 'Ankle'-und 'hip'- strategie

Translated title of the contribution: The role of the cerebellum in postural adaptation to changes in the width of the support surface

D. Timmann, U. W.H. Krause, F. P. Kolb, P. Mummel, F. B. Horak, H. C. Diener

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

The aim of the present study was to investigate the role of the human cerebellum in postural adaptation for changes in the width of the support surface following backward translations. Standing on a flat surface, healthy subjects usually activate dorsal and distal leg muscles in response to backward translations ('ankle'-strategy). Standing on a small beam, ventral and proximal leg muscles are activated more frequently ('hip'-strategy). 'Ankle'-and 'hip'-strategies are the extremes of a continuum of possible postural reflex strategies. A total of 6 patients with isolated lesions of the cerebellum and 6 sexy-and age-matched controls were tested. Both control and cerebellar subjects changed postural strategies with changes in the width of the support surface. Most control subjects demonstrated 'ankle'-strategies while standing on the flat surface and 'mixed'-strategies while standing on the beam. In contrast, most cerebellar subjects utilized 'mixed'-strategies while standing on the flat surface and 'hip'-strategies while standing on the narrow beam. The more frequent use of ventral and proximal muscles might reflect a compensatory mechanism for postural hypermetria in cerebellar subjects.

Translated title of the contributionThe role of the cerebellum in postural adaptation to changes in the width of the support surface
Original languageGerman
Pages (from-to)289-295
Number of pages7
JournalKlinische Neurophysiologie
Volume29
Issue number4
DOIs
StatePublished - Jan 1 1998
Externally publishedYes

Keywords

  • Ankle strategy
  • Cerebellum
  • Hip strategy
  • Postural reflexes

ASJC Scopus subject areas

  • Clinical Neurology
  • Physiology (medical)

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