Point 5 Intro Pathway Deficit Note Summary Overview Problems Contents Anatomy

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