bms 2

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Cerebellum Function
- coordination of voluntary movements
- learning of conditioned reflexes
- balance and posture
Cerebellum Major output

motor output (deep cerebellar nuclei)
Climbing fibers purpose

excite deep cerebellar nuclei and purkinje fibers (directly)
Mossy Fibers purpose

excite deep cerebellar nuclei and granular cells which excite perkinje (indirectly)
Purkinje fibers

inhibit deep cerebellar nuclei
Symptoms of Cerebellar Damage
- ataxia
- hypotonia
- dysarthria
- gait
- dysmetria
- intention tremor
- Holme’s Rebound Phenomenon
- Adiaochokinesia
- Gaze Motor Learning
Primary Motor Cortex Function

execution of movement
Primary Motor Cortex output
- corticospinal and other descending pathways
- thalamus, basal ganglia, cerebellum
Primary Motor Cortex input
- basal ganglia
- sensory motor cortex, premotor cortex, cerebellum
Premotor cortex function
- planning for movement
- certain areas of brain fire when see movement
Premotor cortex output
- primary motor cortex
- brainstem; spinal cord
Premotor cortex input

similar to primary motor cortex
Supplementary Motor Cortex Function

initiation of movement
Supplementary Motor Cortex Output
- primary motor cortex
- brainstem and spinal cord
- basal ganglia
Supplementary Motor Cortex Input

similar to primary motor cortex