The anterior lobe is the part of the cerebellum in front of the primary fissure, on its upper surface. It receives much of the spinocerebellar input and contains a map of the body. It mainly regulates muscle tone, posture and the coordination of gait, especially of the legs.
| Location | Superior surface of the cerebellum, anterior to the primary fissure, beneath the tentorium |
|---|---|
| Parts |
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| Connections |
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| Blood Supply | Superior cerebellar artery |
Adjusts muscle tone and coordinates posture and leg movements during standing and walking.
The anterior lobe, especially its vermis, is the classic site of damage in chronic alcohol use and malnutrition, causing a wide-based, unsteady gait with relatively little arm ataxia. Lesions here may lower muscle tone. Some inherited ataxias also begin in the anterior lobe.
Shrinkage of the anterior superior vermis and lobe causing gait ataxia, mainly affecting the legs.
A broad-based, staggering walk caused by impaired coordination of leg and trunk muscles.
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