Cerebellum

Question 1

Cerebellum

Answer 1

• NO DIRECT PATH TO SPINAL CORD
  Functions: Sensorimotor integration, coordination, motor learning.

Question 2

Ataxia: lack of coordination, errors in rate, range, force, direction of movement.

Answer 2

dysdiadochokinesis- inability to make rapidly alternating movements.

Question 2

Ataxia: lack of coordination, errors in rate, range, force, direction of movement.

Answer 2

dysdiadochokinesis- inability to make rapidly alternating movements.

Question 3

2 kind of input fibers

Answer 3

Mossy Fibers and Climbing Fibers

Question 4

Mossy Fibers

Answer 4

Afferent fibers to the cerebellum
(come from the spinal cord and brainstem)

Question 5

Climbing Fibers

Answer 5

arise from a single nucleus
(Inferior olive of the medulla)

Question 6

Information Processing

Answer 6

Each afferent fiber sends a branch to the deep nuclei and a branch to the cerebellar cortex.

Question 7

Cerebellar Cortex: 3 Layers, 5 Cell types

Answer 7

Granule Cells are positive the others are inhibitory

Question 8

Climbing Fiber input

Answer 8

Complex Spike

Question 9

Mossy fiber input

Answer 9

Simple Spike

Question 10

Mossy fiber system (Very Active)

Answer 10

Climbing fiber (Much less frequent) (Frequency increases during motor learning)