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Neurological Examination, clinical cases and neuropsychological ...

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23/07/54<br />

Cerebellum<br />

Vestibular<br />

<strong>and</strong><br />

Cerebellum<br />

The cerebellum (Latin for little brain) isaregionofthe<br />

brain that plays an important role in motor control.Itisalsoinvolved<br />

in some cognitive functions such as attention <strong>and</strong> language, <strong>and</strong><br />

probably in some emotional functions such as regulating fear <strong>and</strong><br />

pleasure responses. Its movement‐related functions are the most<br />

clearly understood, however. The cerebellum does not initiate<br />

movement, but it contributes to coordination, precision, <strong>and</strong><br />

accurate timing. It receives input from sensory systems <strong>and</strong> from<br />

other parts of the brain <strong>and</strong> spinal cord, <strong>and</strong> integrates these inputs<br />

to fine tune motor activity. Because of this fine‐tuning function,<br />

damage to the cerebellum does not cause paralysis, but instead<br />

produces disorders in fine movement, equilibrium, posture, <strong>and</strong><br />

motor learning<br />

In addition to its direct role in motor control <strong>and</strong> coordination, the<br />

cerebellum also is necessary for several types of motor learning, the<br />

most notable one being learning to adjust<br />

to changes<br />

in<br />

sensorimotor relationships.<br />

The Human Cerebellum:<br />

Cerebellar Functions (Classical Functions):<br />

Co‐ordination of Movements<br />

Stabilizing of Vestibulo‐ocular Reflex (VOR)<br />

Patterned Skilled Movements<br />

Coordination of Eye Movements<br />

Vermis Lobule VI‐‐‐‐Saccadic Eye Movements<br />

Flocculus‐‐‐‐ Visual Tracking<br />

Equilibrium, Gait <strong>and</strong> Postural Controls<br />

Controls of Autonomic Functions (Cardiovascular)<br />

Immune Functions (?)<br />

12

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