Cerebellar Flashcards
What is the output from the vestibular apparatus (vestibulocerebellum)
Eye movements, balance, equilibrium
What 2 impairments can occur if the vestibular apparatus is affected?
Nystagmus and trunk ataxia
What type of info is sensed in the spinocerebellum?
-somatosensory
-visual, auditory, vestibular
What is the output of the spinocerebellum
Medial and lateral upper motor neurons
What two impairments can occur from the spinocerebellum
Ataxic gait and limb ataxia
What structure collects information in the cerebrocerebellum
Cerebral cortex
What outputs occur from the cerebrocerebellum? Impairments?
-motor and premotor cortex
-decreased coordination of fine finger movements
What structures are affected by spinocerebellar ataxia?
Cerebellum, brain stem and SC
S/S of spinocerebellar ataxia
-ataxia
-in coordination
-slow saccade
-optic atrophy
-dysarthria
-balance deficit
-fall, tremor
-myoclonus
-nystagmus
What do pts with cerebellar atrophy not complain of
Dizziness, vertigo, hearing loss
Symps of cerebellar atrophy
-balance deficits
-vision impairment
-slow gait
-tremor
-decreased endurance
What is hypermetria
-underestimate movement
-start slow, fast, over shoot
What is hypometria
-overestimate of movement
-start fast, slow, undershoot
Cerebellar disorders - effects on vision
-gaze evoked nystagmus
-impaired VOR adaptation ability
-decreased motor control of eye movements (ocular dysmetria)
-blurred vision or diplopia
Loss movement control in what 3 body parts
Eyes, trunk, extremities