Cerebellar dysfunction

Question 1

what could cause cerebellar dysfunction

Answer 1

stroke ~5%
tumor
structural (chari malformation)
toxicity
immune mediated (MS)
trauma
infx or endocrine (hypothyroid)

Question 2

what contains all axons that transmit info to and from cerebellum

Answer 2

Peduncles

Question 3

what is the vestibulocerebellum role in mvmt

Answer 3

VOR
gaze + eye mvmt = nystagmus
posture + balance

Question 4

what is the spinocerebellum role in mvmt

Answer 4

gaze + eye mvmt
postural tone (hypotonia/tremor)
balance + locomotion (ataxia)
coordination (dysmetria/dysdiado)

Question 5

what is the cerebrocerebellum (neo) role in mvmt

Answer 5

complex, multi jt mvmt (dyssenergia)
motor planning (decomposition)
visually guided mvmt (dysmetria) (dysdiado)

Question 6

explain motor coordination theory

Answer 6

primary function of cerebellum is to coordinate multi-jt for smooth & fluid mvmt

Question 7

explain timer hypothesis theory

Answer 7

main site of temporal representation of mvmt (perceptual processing)

Question 8

explain internal model theory

Answer 8

works via feedforward control when initiating mvmt

Question 9

list some obvious clinical manifestation if someone has cerebellar dysfunction

Answer 9

ATAXIA
dysmetria (may worsen w inc/dec speed)
dysdiado
decomposition
lack of chekc or rebound during MMT
DTR pendular affect after reflex is elicited

Question 10

what type of learning is most affected in ppl with cerebellar dysfunction

Answer 10

associative and procedural learning since most reliant on cerebellum

Question 11

medical management for cerebellar dysfunction

Answer 11

no cure or pharma; rely mainly on PT

Question 12

The international cooperative ataxia rating scale ICARS is socred from 0-100 with 0 indicating ____ ataxia and 100 indicating ____ ataxia

Answer 12

No signs of; severe

Question 13

The scale of the assessment & rating of ataxia SARA is similar to ICARS but is quicker to admin.
It’s scored from 0-40 with 0 indicating ____ ataxia and 40 indicating ____ ataxia

Answer 13

No signs of; severe

Question 14

the prognosis of recovery depends highly on _____ and ____

Answer 14

etiology & extent of lesion

Question 15

since repetitive fatigue activity worsens posture control what type of practice is best?

Answer 15

distributed practice

Question 16

low, submax, or max resistive exercises improves muscle fatigue?

Answer 16

submax

Question 17

should you challenge pt’s with cerebellar dysfunction or prevent muscle fatigue/overwork?

Answer 17

should challenge to promote plasticity

Question 18

what technique is utilized during PT for cerebellar dysfunction that is often not used with other disorders/disease

Answer 18

Compensation techniques
- decomposition, widen BOS, AD use, minimize distraction

Question 19

will weighting down a pts affected limb improve or worsen ataxia?

Answer 19

initially improves but then worsens as result of motor feedback that pt is not used to and affects dysmetria

Question 20

The cerebellum is integral in ______ multi-jt mvmt and ____ mvmt to changes in environment and learning new mvmt patterns

Answer 20

coordinating; adapting

Question 21

what is an important clinical factor to keep in mind during PT treatment

Answer 21

if impairments are expected to improve or not
*if not expected = compensation