Sensorimotor cortical projections to the marginal zone of the trigeminal subnucleus caudalis.
Brain Res
; 232(1): 171-6, 1982 Jan 28.
Article
in En
| MEDLINE
| ID: mdl-7055695
ABSTRACT
An ultrastructural investigation of the marginal zone (lamina I) of the spinal trigeminal subnucleus caudalis was carried out in 7 adult cats at 30 h through 7 days after ablations of face area of the contralateral sensorimotor cortex. Corticofugal boutons were observed to undergo electron-dense degeneration in the marginal zone beginning 4 days after the cortical lesion. These boutons were small (1--2 micrometers), widely dispersed and made synaptic contacts onto small dendrites or dendritic spines. These new observations indicate that cortical inhibition and facilitation of ascending orofacial sensation may be mediated in part by a direct pathway to the marginal zone.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Trigeminal Nuclei
/
Cerebral Cortex
Limits:
Animals
Language:
En
Journal:
Brain Res
Year:
1982
Document type:
Article