Cerebellum
Lobes
- Anterior cerebellar lobe
- Posterior cerebellar lobe
- Flocculonodular lobe:
Zones
- Vermis (in midline)
- Paravermis (aka the intermediate zone)
- Hemisphere (aka the lateral zone)
Functional modules
- Vestibulocerebellum (aka Archicerebellum)
- It is important for equilibrium and eye movements.
- Clinical Correlation - Nystagmus
- Spinocerebellum (aka Paleocerebellum)
- It plays a major role in postural stability.
- Clinical Correlations - Truncal ataxia, Gait Ataxia
- Pontocerebellum (aka Neocerebellum)
- It is geared towards fine motor movements, which are typically goal-oriented.
- Clinical Correlation - Incoordination
Somatotopic organization
- Unilateral cerebellar lesions affect the ipsilateral side of the body.
- The midline cerebellum plays a role in posture whereas the lateral cerebellum assists in fine motor, goal-oriented skills.