Modulation of the mechanically evoked perioral reflex during active force dynamics in young adults

Richard D. Andreatta, Steven M. Barlow, Donald S. Finan

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

Mechanically evoked reflex activity in the superior and inferior segments of the orbicularis oris muscle was sampled from three normal females using a specially designed linear motor operating under force feedback. Mechanical inputs delivered to the left upper lip during a ramp-and-hold task produced a composite reflex response characterized by phases of excitation and suppression at the homonymous muscle recording site. The modulation of the evoked composite perioral reflex was found to be dependent upon the rate and phase of force recruitment. The organization of the composite perioral reflex response is discussed in relation to speech motor control and load compensatory mechanisms.

Original languageEnglish (US)
Pages (from-to)175-179
Number of pages5
JournalBrain Research
Volume646
Issue number1
DOIs
StatePublished - May 16 1994

Keywords

  • Active force dynamics
  • Adult
  • Electromyography
  • Mechanical stimulation
  • Orbicularis oris
  • Sensorimotor re-action
  • Skin contactor

ASJC Scopus subject areas

  • Neuroscience(all)
  • Molecular Biology
  • Clinical Neurology
  • Developmental Biology

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