L30

Question 1

where does the cerebellum receive input from

Answer 1

spinal cord, brainstem and cortex

Question 2

what are the three lobes of the cerebellum

Answer 2

anterior, posterior, flocculonodular

Question 3

what are the three zones of the cerebellum

Answer 3

vermis, intermediate hemisphere, and lateral hemisphere

Question 4

deep nuclei of the cerebellum

Answer 4

fastigial
interposed
dentate
vestibular

Question 5

what are the three functional areas of the cerebellum and the associated nuclei

Answer 5

vestibulocerebellum = vestibular nuclei
spinocerebellum = fastigial and interposed nuclei
cerebrocerebellum = dentate nuclei

Question 6

what is the function of the vestibulocerebellum

Answer 6

Vestibular ocular reflex, balance, posture

Question 7

subdivisions of the vestibulocerebellum

Answer 7

flocculus and nodulus

Question 8

where is the vestibulocerebellum getting input from

Answer 8

vestibular input from vestibular nuclei and CN8

Question 9

where is the vestibulocerebellum outputting onto

Answer 9

back onto vestibular nuclei in brainstem

Question 10

deficits of vestibulocerebellum

Answer 10

balance, posture and eye movements

Question 11

function of spinocerebellum

Answer 11

sensory integration and coordination of descending output for multi joint movements and dynamic stability

Question 12

subdivisions of the spinocerebellum

Answer 12

intermediate and vermis

Question 13

what is the input for the spinocerebellum

Answer 13

somatosensory info from periphery, visual and vestibular information and motor copy specific to body region

Question 14

output of information from spinocerebellum

Answer 14

lateral vestibular nuclei and reticular formation (vermis), M1 areas via thalamus, other nuclei within brainstem (activation of CPGs via intermediate)

Question 15

function of cerebrocerebellum

Answer 15

visually guided and goal directed movements, supra spinal control circuits, planning of movements

Question 16

input for cerebrocerebellum

Answer 16

M1, premotor cortex, frontal and posterior parietal lobes

Question 17

output of cerebrocerebellum

Answer 17

thalamus

Question 18

nuclei of cerebrocerebellum

Answer 18

dentate nucleus

Question 19

each incoming input to the cerebellum synapses on what

Answer 19

deep neuclei

Question 20

from the deep nuclei where does the incoming input project

Answer 20

to the cerebellar cortex

Question 21

once the input has reached the cerebellar cortex where does it project

Answer 21

back onto the relevant deep nuclei

Question 22

what happens when you are born without a cerebellum

Answer 22

some are unable to adapt however many have semi-normal lives as the cerebellum is redundant and there are other systems that have the same functions

Question 23

what are common signs of cerebellar deficits

Answer 23

wide base of support
ataxic gait
impaired multijoint coordination
alternating movements
overshoot or undershoot movements
rebound phenomenon
overshooting reactions to perturbations

Question 24

what are some similarities between the cerebellum and the basal ganglia

Answer 24

• rely heavily on cortical input
• have relay nuclei
• send output to the thalamus

Question 25

main difference of the cerebellum and basal ganglia

Answer 25

BG = preparatory phase = involved in the planning and gain of complex movements
Cerebellum = concern with the coordination/timing and execution of on going movements