Cyclic modulation of the H-reflex in a wrist flexor during rhythmic flexion-extension movements of the ipsilateral foot

F. Baldissera, P. Cavallari, L. Leocani

Research output: Contribution to journalArticlepeer-review

Abstract

In 12 subjects, each sitting on an armchair with the right forearm prone, the H-reflex elicited in the resting flexor carpi radialis muscle underwent cyclic excitability changes correlated with rhythmic flexion-extension movements of the ipsilateral foot (frequency of oscillations between 1.5 and 2.5 Hz). During foot plantar flexion, the H-reflex underwent a clear-cut increase, the maximum facilitation falling, in most subjects, within the second half of that phase: then, a gradual reduction in size led the reflex amplitude back to the initial value at the end of foot dorsal extension. If present also when the wrist and the ankle are moved together, this facilitation should favour the in-phase (isodirectional) association between movements and, conversely, hinder the anti-phase coupling.

Original languageEnglish
Pages (from-to)427-430
Number of pages4
JournalExperimental Brain Research
Volume118
Issue number3
DOIs
Publication statusPublished - 1998

Keywords

  • H-reflex
  • Human
  • Interlimb coordination
  • Voluntary movement

ASJC Scopus subject areas

  • Neuroscience(all)

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