Point: 5. Accessory Cuneate Nucleus
Function:
Receives information regarding unconscious proprioception
(information conveyed via 1a, 1b and II fibers) from IPSI.
upper limb and neck. Medullary equivalent of Clarke's
column.
Pathway:
Neurons in the accessory cuneate nucleus receive input from
central processes of dorsal root ganglion cells rostral to
C8. These neurons send cuneocerebellar axons to the IPSI.
cerebellum via the inferior cerebellar peduncle (restiform
body), where they accompany dorsal spinocerebellar
[uncrossed] and olivocerebellar fibers [crossed]).
Deficits:
Lesion results in incoordination of IPSI. arm.
Other Note:
CEREBELLAR LESIONS=IPSI. MOTOR INCOORDINATION; CEREBRAL
CORTEX LESIONS=CONTRA. MOTOR PROBLEMS
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