Cerebellum Lesions

Question 1

What is the purpose of the cerebellum?

Answer 1

Influences the ability to directly or indirectly execute smooth, accurate and controlled movements.

Question 2

Cerebellar lesions can affect what?

Answer 2

Archicerebellum, spinocerebellar, neocerebellum

Question 3

Archicerebellum impairments

Answer 3

central vestibular symptoms, gait and trunk ataxia, little change in tone.

Question 4

Central vestibular symptoms

Answer 4

occular dysmetria, poor eye pursuit, vestibular ocular reflex (VOR) dysfunction, impaired hand eye coordination. **nystagmus might be present. **

Question 5

Gait trunk ataxia

Answer 5

poor postural control and WBOS

Question 6

Spinocerebellum impairments

Answer 6

Hypotonia w/ weakness and fatigue
truncal ataxia
ataxic gait

Question 7

Hypotnia w/ weakness and fatigue issues…

Answer 7

primary issue is timing of muscles activation

Question 8

Truncal ataxia

Answer 8

disequilibrium, static posture tremor, increased sway and WBOS **pt has complication w/ standing w/ eyes closed. **

Question 9

Ataxic gait

Answer 9

unsteady gait, increased falls, decreased step length and increased step width. loss of muscle coordination, high guard position

Question 10

Neocerebellum impairment

Answer 10

Intention tremor
Dysdiadochokinesia
Dysmetria

Question 11

intention tremor

Answer 11

tremor when trying to reach for something (performed task)

Question 12

Dysdiadochokinesia

Answer 12

impaired rapid alternating movement (RAM) especially w/ increased speed.

Question 13

Dsymetria

Answer 13

Hypermetria (overshoot), hypometria (undershoot.

Question 14

How do you treat dysmetria?

Answer 14

PNF using dynamic reversal w/ careful graded resistance.

Can assist patient with better control, because pt lacks control of speed, high speed isokinetic interventions are contraindicated.

Question 15

dyssynergia

Answer 15

abnormal timing, coordination, sequencing.

Question 16

asynergia

Answer 16

loss ability to associate muscles together for complex movements

Question 17

errors in timing

Answer 17

related to perceptual task

Question 18

asthenia

Answer 18

generalized weakness; fixation or position holding

Question 19

dysarthria

Answer 19

speech articulation “scanning speech” one word at a time

Question 20

hypotonia

Answer 20

difficulty with postural control of proximal (axial) muscles especially w/ acute cerebellar lesions

Question 21

cognition

Answer 21

information processing and attention deficits.

Question 22

emotional dysregulation

Answer 22

change in emotional behavior

Question 23

rebound phenomenon

Answer 23

loss of check reflexes, isometric resistance is removed.

Question 24

anticholinergic drugs

Answer 24

used to control tremors (can cause visual disturbances)

Question 25

amantadine

Answer 25

enhances dopamine release

Question 26

selegiline

Answer 26

used in early stages to slow progress of disease