Cerebellum Dissection Enlargement

The cerebellum can be divided into the following functional divisions:

Neocerebellum: This is the phylogenetically newest part. It consists of the lateral lobes and is involved in fine movements and speech through major connections with the cerebral cortex.

Paleocerebellum: Through interconnections with the spinal cord, this part mediates sequential movements such as walking, running and swimming. It consists of the anterior and posterior vermis.

Archicerebellum: Its major connections are with the vestibular (balance) system. It consists of the flocculus, nodule and lingula and mediates general posture and eye movements.

As you can see from these descriptions, the cerebellum is primarily involved in the control of movement. Injury to the cerebellum often results in incoord- ination of voluntary movement, or ataxia. Such ataxia occurs with alcohol intoxication. Cerebellar ataxia can include any voluntary action, from eye movements to speech.