Which cerebellum part is primarily involved in balance and vestibulo-ocular reflex?

• A. Vermis
• B. Anterior
• C. Posterior
• D. Flocculonodular

Answer: (D)

Balance and the vestibulo-ocular reflex rely on the vestibulocerebellum, located in the flocculonodular lobe. This part of the cerebellum receives input from the vestibular system and helps coordinate head movements with compensatory eye movements, keeping your gaze steady as you move. It also contributes to maintaining posture and balance. Other cerebellar regions have different primary roles—for example, the vermis mainly coordinates trunk and proximal limb movements, the anterior lobe handles coordination of body movements, and the posterior lobe is more about planning and fine skilled actions.