Cerebellum Flashcards
Cerebellum function
Detects motor error between intended movement and actual movement
Modulates motor cortex commands based on feedback
Effects of cerebellar damage
Instability
Voluntary movement errors
Nystagmus
Cerebellar ataxia
Why is partial recovery possible after cerebellar damage
Neuronal plasticity
3 functional divisions of cerebellum
Spinocerebellum
Cerebrocerebellum
Vestibulocerebellum
Where do inputs and outputs of the cerebellum go from/to
Cerebellar peduncles
Deep cerebellar nuclei
Fastigial nucleus
Interposed nuclei
Dentate nucleus
Do the superior middle and inferior colliculi contain efferent or afferent fibres
Sup - efferent
Middle - afferent
Inf - afferent + efferent
3 main parts of cerebellum
Cortex - cerebro spino vestibulo
Deep nuclei - dentate interposed fastigial
Peduncles - sup middle inf
Cerebrocerebellum function
Plan and execute high skilled movements, temporal sequence, and speech
Spinocerebellar functions
Coordination of locomotor and eye movements
Vestibulocerebellum functions
Coordinate head eye and balance to maintain gaze stability
Cerebellum anatomical lobes
Anterior
Posterior
Flocculonodular
Blood supply to the cerebellum
Superior cerebellar arteries
Anterior inferior cerebellar arteries
Posterior inferior cerebellar arteries
3 histological layers of the cerebellum
Molecular layer
Purkinje cell layer
Granule cell layer
What NT is used by Purkinje cells
GABA
What is the central section of the cerebellum called
Vermis
Are move to deficits caused by cerebellar lesions ipsilateral or Contralateral
Ipsilateral
Which tracts allow the Vestibulocerebellum to ensure stability of gaze
Balance head on body - medial vestibulospinal tract
Balance body on ground - lateral vestibulospinal tract
Flocculonodular syndrome signs and symptoms
Little control of axial muscles
Ataxic gait
Falling to side of lesion
Nystagmus
Injury to which part of the cerebellum causes Flocculonodular syndrome
Vestibulocerebellum
Who is Flocculonodular syndrome most common in
Young children w medulloblastoma
Anterior lobe syndrome is caused by damage to which part of the cerebellum
Spinocerebellum
Anterior lobe syndrome signs
Ataxic gait
Hypotonia
Depressed or pendular reflexes
Why can alcoholics get anterior lobe syndrome
Malnutrition
Vitamin b deficiency
What causes neocerebellar syndrome
Neocerebellum/cerebrocerebellum damage
Neocerebellar syndrome signs
Loss of hand eye coordination
Dysmetria
Dysdiadochokinesis
Intention tremors
Slurred speech
Loss of cognitive eye movement
Attention and perception deficits
Cerebellar stroke signs and symptoms
Headache vertigo nausea vomiting
Eye movement problems
Dysarthria
Dysphagia
Ataxia
Arm weakness and incoordination
Ataxic gate
Wide based, reeling and swaying gait
Which part of the cerebellum controls hand eye coordination, speech, and voluntary arm and hand movements
Cerebrocerebellum
