Cerebellum

Question 1

What are the functions of the cerebellum?

Answer 1

Regulating and correcting complex and highly skilled movement.
Motor learning

Question 2

Discuss the cerebrocerebellum.

Answer 2

The lateral part of the cerebellum
Cortex
Spatial movement- planning and coordinating
Temporal movement- coordinating and timing
performing

Dentate nucleus involved

To the VLN- to frontal cortex- Premotor cortex and association via Superior peduncle.

Superior colliculi- to the umn for eye movement

the red nucleus to the inferior olive back to the cerebellum,- this allows ht e feedback on a major Cerebellum input to output, allows for adaptive function of the cerebellar circuit in motion learning.

Superior peduncle-efferent
middle- afferent

Question 3

Discuss the spinocerebellum.

Answer 3

Spinocerebellum
topographically
vermis proximal eye and head
Paramedian- distal

interposed ( emboliform and globose)- thalamic nucleus- frontal lobe- volitional movement of limbs

Fastigial- reticular formation and vestibular cortex- governs movement of the axial and proximal lmb muscles

inferior peduncle
A and E

Question 4

Discuss the Vestibulocerebellum.

Answer 4

To the vestibiulo-organs and nuclei brainstem
Vestibular occular reflex- fixed eye point despite the movement of the head.
Posture and balance

Fastigial nucleus

VO- VN- C
integrating the sensory and movement, VO sensors the change of the head’s position, angular or linear.

Inferior peduncle

Question 5

Discuss the projections to the cerebellum.

Answer 5

Frontal/Parietal cortex
to RN- IO crosses over- through IP
and to PN crosses over- through MP

Spinal (tells which part is moving) and vestibular enters ipsilaterally.

Question 6

Discuss the projections out of the cerebellum.

Answer 6

Dentate- through SP- crosses over to the VL lateral of the thalamus, and to the Superior Colliculi.

Interposed- through the IP- to SC- RF

Fastigial to RF and VN to the ventral horn of the spinal cord