Point: 6. Inferior Olivary Nucleus
Function:
Motor coordination via projections to the cerebellum. Sole
source of CLIMBING FIBERS to the cerebellum.
Pathway:
Axons arising from cells in the inferior olive CROSS and
enter the inferior cerebellar peduncle to reach the CONTRA.
cerebellar cortex. (nucleus receives a variety of motor
inputs that you don't need to know).
Deficits:
Lesion results in motor incoordination of the CONTRA. arm
and leg.
Other Note:
CEREBELLAR LESIONS RESULT IN IPSI. MOTOR INCOORDINATION.
INFERIOR OLIVE PROJECTS TO CONTRA. CEREBELLUM, THEREFORE
LESIONS OF INF. OLIVE=CONTRA. MOTOR INCOORDINATION. LESION
OF INFERIOR CEREBELLAR PEDUNCLE=IPSI. PROBLEMS.
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