Abstract:
:The innervation of the tensor tympani muscle of the middle ear in Macaca fascicularis (cynomolgus monkey) was studied using the horseradish peroxidase (HRP) neural tracing technique. A compact column of small trigeminal motoneurons was labeled ipsilaterally following intramuscular application of HRP to the tensor tympani muscle. This column is located ventral and lateral to the dorsolateral division of the trigeminal motor nucleus, and just medial to the descending trigeminal nerve rootlets. No labeled neurons were present in the trigeminal mesencephalic nucleus or any other brainstem nucleus. Results are compared with those previously reported in several non-primate mammalian species, and in detail with that of the cat. A possible differential role of the tensor tympani muscle in acoustic modulation/middle ear aeration between primate and non-primate mammals is discussed.
journal_name
Brain Resjournal_title
Brain researchauthors
Gannon PJ,Eden ARdoi
10.1016/0006-8993(87)91376-xsubject
Has Abstractpub_date
1987-02-24 00:00:00pages
257-62issue
1-2eissn
0006-8993issn
1872-6240pii
0006-8993(87)91376-Xjournal_volume
404pub_type
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