Cerebellum Review

Question 1

what is the blood supply of the cerebellum

Answer 1

Basilar - Superior Cerebellar Artery / Anterior Inferior Cerebellar Artery

vertebral - posterior inferior cerebellar artery

Question 2

function of cerebellum

Answer 2

smooth controlled movements
equilibrium
posture
muscle tone
movement initiation
motor learning

Question 3

what anatomical location is the spinocerebellum made of?

Answer 3

vermis and paravermis

Question 4

what anatomical location is the cerebrocerebellum made of

Answer 4

lateral hemisphere

Question 5

what anatomical location is the vestibulocerebellum made of

Answer 5

flocculus
nodulus

Question 6

lesion to the spinocerebellum is associated with

Answer 6

truncal ataxia
gait ataxia
imbalance
dysarthria

Question 7

cerebrocerebellum lesion is associated with

Answer 7

limb ataxia
impaired fine motor controls
dysarthria
hypotonia

Question 8

in limb ataxia, what can be seen?

Answer 8

dysmetria
dysdiadochokinesia

Question 9

lesion to the vestibulocerebellum is associated with

Answer 9

postural instability (sitting/standing)
gait abnormalities
nystagmus
- impaired VOR

Question 10

how does CNS vs PNS nystagmus differ

Answer 10

C - pure vertical, direction changing
P - not purely vertical, direction fixed

Question 11

what is the name of LE spinocerebellar pathway

Answer 11

posterior spinocerebellar

Question 12

what is the name of UE spinocerebellar pathway

Answer 12

cuneocerebellar

Question 13

what is asthenia

Answer 13

generalized mild muscle weakness
- will not lead to atrophy

Question 14

what is dyssynergy

Answer 14

movement decomposition

Question 15

how is the presentation of cerebellar ataxia different from sensory ataxia

Answer 15

truncal ataxia (CA)

Question 16

what is the lesion location associated with cerebellar ataxia

Answer 16

cerebellum
spinocerebellar tracts

Question 17

what is the lesion location associated with sensory ataxia

Answer 17

DCML
peripheral nerve
somatosensory cortex

Question 18

explain joint proprioception in cerebellar ataxia vs sensory ataxia

Answer 18

CA - intact
SA - absent/abnormal

Question 19

how does coordination testing performance differ in those with cerebellar ataxia vs sensory ataxia

Answer 19

CA - will not change if EO or EC
SA - improve with EO

Question 20

what was the traditional approach to addressing coordination

Answer 20

hands on support - tactile cueing
AD for safety
weighting limbs for proprioceptive loading
movement performed slowly and reciprocally

Question 21

what is the new approach to address coordination

Answer 21

high intensity
task specificity
VR

–> aim to improve function rather than a specific impairment