Organization of the facial nucleus in the rat

C. R.R. Watson, S. Sakai, William Armstrong

Research output: Contribution to journalArticle

101 Citations (Scopus)

Abstract

The topographic organization of the facial nucleus motoneurons in the rat was investigated with the horseradish peroxidase retrogade tracing method using tetramethyl benzidine as a chromogen. Facial muscles were 'represented' on the facial nucleus in an orderly fashion. For example, the motoneurons supplying the rostral (nasolabial) muscles are laterally placed, whereas those supplying the caudal (auricular) muscles are medially placed. Notable findings in this study are: the relatively unremarkable size of the nasolabial (vibrissal) muscle representation; there does not seem to be an increase in size of this part of the nucleus, commensurate with the specialized sensory functions of the vibrissal area of the face and the neurons suppying the posterior belly of the digastric are found in the suprafacial nucleus which lies about 1 mm dorsal to the main facial nucleus.

Original languageEnglish (US)
Pages (from-to)19-28
Number of pages10
JournalBrain, Behavior and Evolution
Volume20
Issue number1-2
DOIs
StatePublished - Jan 1 1982
Externally publishedYes

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Motor Neurons
Muscles
Facial Muscles
Horseradish Peroxidase
Neurons
Facial Nucleus
3,3',5,5'-tetramethylbenzidine

All Science Journal Classification (ASJC) codes

  • Developmental Neuroscience
  • Behavioral Neuroscience

Cite this

Organization of the facial nucleus in the rat. / Watson, C. R.R.; Sakai, S.; Armstrong, William.

In: Brain, Behavior and Evolution, Vol. 20, No. 1-2, 01.01.1982, p. 19-28.

Research output: Contribution to journalArticle

Watson, C. R.R. ; Sakai, S. ; Armstrong, William. / Organization of the facial nucleus in the rat. In: Brain, Behavior and Evolution. 1982 ; Vol. 20, No. 1-2. pp. 19-28.
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