Patterns of activity of perioral facial muscles during mastication in man

M. Schieppati, G. Di Francesco, A. Nardone

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

The activity of buccinator, orbicularis oris superior and inferior, quadratus and triangularis muscles was recorded by surface and needle electrodes during spontaneous unilateral mastication of small or large boluses. Their activity was compared with that of the masticatory muscles masseter and digastric, and with the vertical movement of the jaw. The facial muscles were active during mastication, displaying both tonic and phasic activity. Although the cyclic activity was broadly linked to lowering of the jaw, there was no strict time correspondence between the activity of the various facial muscles themselves, or between the activity of the facial muscles and the digastric. The timing and amplitude of facial muscle activity were affected by the duration of the masticatory cycle, the side on which chewing took place, the size of the bolus, and whether or not lip to lip contact was made.

Original languageEnglish
Pages (from-to)103-112
Number of pages10
JournalExperimental Brain Research
Volume77
Issue number1
DOIs
Publication statusPublished - Aug 1989

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Facial Muscles
Mastication
Lip
Jaw
Masticatory Muscles
Needles
Electrodes
Muscles

Keywords

  • EMG
  • Facial muscles
  • Man
  • Mastication

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

Patterns of activity of perioral facial muscles during mastication in man. / Schieppati, M.; Di Francesco, G.; Nardone, A.

In: Experimental Brain Research, Vol. 77, No. 1, 08.1989, p. 103-112.

Research output: Contribution to journalArticle

Schieppati, M. ; Di Francesco, G. ; Nardone, A. / Patterns of activity of perioral facial muscles during mastication in man. In: Experimental Brain Research. 1989 ; Vol. 77, No. 1. pp. 103-112.
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