Facial muscle innervation in cebid (new world) and macaque (old world) monkeys via a ramus communicating with the trigeminal nerve

D. Sutton*, C. R. Larson, Mary E. Lovell, R. C. Lindeman

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Direct motor and reflex EMG responses were recorded from facial muscles in monkeys subjected to stimulation of the communicating ramus of the auriculo-temporal nerve. Transection of the ramus distal to the stimulus site eliminated the direct motor response. Transection of the ramus proximal to the stimulus site eliminated the reflex component. The results suggest that the trigeminal nerve carries motor fibres serving facial muscles.

Original languageEnglish (US)
Pages (from-to)59-64
Number of pages6
JournalArchives of Oral Biology
Volume22
Issue number1
DOIs
StatePublished - 1977

Funding

On the basis of indirect evidence,B aumel (1974) wass uggestetdh at fibreso f the communicatingra mus mightc arrym otor as well as sensoryf ibres.T he func-xional status of the ramus is unclear. Our observations indicate that it may normally contribute to facial motor activity, and strengthen the suggestion rhat this route affords a potential motor pathway capable of some degreeo f substitution for impaired facial motor functions. If the characteristics seen in mon- Acknowledgements-This research was supported by National Institutes of Health grants RR00166 and NA-11780-02a, nd by the William G. Reed Fund.

ASJC Scopus subject areas

  • Otorhinolaryngology
  • General Dentistry
  • Cell Biology

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