The cerebellum and motor learning Flashcards

1
Q

Role of the cerebellum

A

Maintenance of balance and posture

Coordination of voluntary movements

Motor learning

Cognitive functions

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2
Q

Functional subdivisions of the cerebellum

A

Vestibulocerebellum

Spinocerebellum

Cerebrocerebellum

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3
Q

Lobar anatomy of the cerebellum

A

Vermis is innermost (fastigial nucleus)

Paravermal is middle section (interposed nucleus)

Hemispheres are outer section (dentate nucleus)

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4
Q

Fastigial output

A

Medial descending systems

Motor execution

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5
Q

Interposed output

A

Lateral descending systems

Motor execution

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6
Q

Denate ouptut

A

Areas 4 and 6

Motor planning

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7
Q

Vestibular nuclei

A

Balance and eye movements

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8
Q

Function of spinocerebellum

A

Control of muscle tone/ posture

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9
Q

Dysmetria

A

Movement is not stopped in time

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10
Q

Dysnergia

A

Decomposition of complex movements

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11
Q

Dysdiadochokinesia

A

Reduced ability to perform rapidly altering movements

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12
Q

Intentional tremor

A

Tremor arising when trying to perform goal directed movement

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13
Q

Dysarthria

A

Articulation incoordination in respiratory muscles

Uneven speech strength and velocity

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14
Q

Nystagmus

A

Involuntary, rhythmical, repeated oscillations of one or both eyes in any or all directions of view

Movement minimises ability to focus the eyes on one point

Effect of lesion to vestibulocerebllar pathway

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15
Q

Gait ataxia

A

Unsteadiness of ealking

Effect of lesion in spinocerebllar pathway

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16
Q

Hypotonia

A

Disturbance of limb posture

Effect of lesion in spinocerebllar pathway

17
Q

Mossy fibres

A

Inputs from spinal cord and brainstem

18
Q

Climbing fibres

A

Inputs from inferior olivary nucleus