2.15

Question 1

Provide the effects of a lesion in each respective functional area of the cerebellum.

Answer 1

Vestibulocerebellum – decreased balance particularly with the upright ataxial position and decreased coordination of eye movement with movements of the head.

Spinocerebellum – postural coordination, hypotonia, dysmetria

Cerebrocerebellum – decreased timing of movements and are demonstrated as decreased fluidity during tasks such as reaching.

Question 2

What is the rebound phenomenon?

Answer 2

A test – patient is asked to move the arm against resistance. When resistance is removed arm should continue to move in the same direction and then go back to the starting position.

Question 3

What does “decomposition of movement” refer to when speaking of the cerebellum?

Answer 3

Disruption of the flowing sequence of movement components that should take place simultaneously.