Cerebellum parts and function

Developmental

1. Cerebellum Assignment By Wisha Asma SLP 1 st year

2. Cerebellum A region of brain that coordinate motor function and muscle tone Largest part of hindbrain Located behind the top part of the brain stem. Called silent area

3. Functional divisions Vestibulocerebellum   Spinocerebellum  Corticocerebellum

4. Vestibulocerebellum Inputs : From vestibular nuclei in brainstem Function : Regulate movements underlying posture and equilibrium Coordination of eye and head movements Damage : Impairs ability to stand upright, maintain posture and balance Cerebellar nystagmus

5.  Spinocerebellum Inputs : Directly from spinal cord Function : Lateral portion Movement of distal muscle (ex. gross movements during walking ) Central portion (vermis) Movement of proximal muscles Damage : Overshoot and intension tremor Impaired gait

6. Corticocerebellum Inputs : Many areas of cerebral cortex (relayed thru Pons) Function : Planning and timing of sequential movements Speech Damage : Ataxia : Incoordination of complex, purposeful movements of hands, fingers, feet and speech apparatus Failure of smooth progression of movement Lesions to any division of cerebellum result in impairments on ipsilateral side of the body