Cerebellum

 

Functionally the cerebellum is thought to organize information like a computer.   All information from different parts of the body enter the cerebellum and are integrated in such a way that a postural balance is the end result.   Hence in cerebellar disease, there is a cerebellar ataxia.

Differences between cerebellar and basal ganglia disease

This mainly by distinguishing the type of tremor. While in cerebellar disease, we have intention tremor, in basal ganglia disease, (parkinsonism) we have tremor at rest.

Both cerebellum and basal ganglia mediate the function of the extrapyramidal system.  In Parkinson's disease (basal ganglia) we expect to find the following

  • Increase muscle tone

  • Cogwheel rigidity

  • Tremor at rest

  • We also have symptoms like hemiballism, full ballism, athetosis, ataxia and chorea.

In cerebellar disease we have two types

Archicerebellar disease in which the patient sways from side to side as if drunk. The patient also has intention tremors, nystagmus and ataxia.

Neocerebellar disease. This causes the following

  • Intention tremor

  • Hypotonia

  • Asynergia

  • Dysdiadochokinesia

  • Rombergism

  • Intention tremor

  • Rebound phenomenon

  • Loss of skilled movement and activity including skilled balance.


Brain function 

Brainstem Medulla Pons Midbrain Thalamus Epithalamus
Basal ganglia Forebrain Temporal lobe Cerebral operculum Remove operculum Wall of lateral ventricle 1
Wall of lateral ventricle 2 Wall of lateral ventricle 3 lateral ventricle 1 lateral ventricle 2 Base of brain Rhomboid fossa

 

 

 


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