Cerebellum

Question 1

Archi cerebellum

Answer 1

Archi Cerebellum (vestibular) Flucco nodular Lobe

Function:
Coordinate eye movement with Head. (MLB)
++3,64 Cranial N.N

adjust body positionSite, Predict site For next move, Adjust action of agonist, antagonist.
Control axial, proximal Ms.

Lesion
1) Drunken gait
(2) Nystagmus

Question 2

Paleo cerebellum

Answer 2

pale cerebellum (spinocerebellum)

Vermal +2 para vermal parts Fastigial GE nuclei

Co ordination of voluntary Movement

1)Servo Comparator Braking.
Control axial, proximal
Stop A Extra A after stoping of Movement by Sending braking inputs.
- detect errors of performed movement Send it to Cortex

2- Damping
smooth the move ment +agonist -antagonist.

3- Rapid ballistic movement
“Circus clown”

Effect of spinocerebellum on Ms tone: inhibitory.

Lesion.
1- intentional Tremors.
2- Dysmetria
3- under lover shooting

Question 3

Neo cerebellum

Answer 3

3) Neo cerebellum ( cerebrocerebellum) Dentate N. (Lateral).

Function:
1-Planning and programing of movement with: BG

2 extra motor predictive function.
Inputs. →→→Expect time of events as: goal keeper.
3- timing
Predicting+Timing Sensory input→Control rate, time direction of movement
→reach goal in certain time
Effect on Ms Tone:
Stimulatory

Net Result of cerebellum on SR: ++ stimulatory.