Abstract

The vestibular nuclei have extensive afferent and efferent connections with posterior cerebellum which can be referred to as vestibulocerebellum. Some of vestibular primary afferents also project to the ipsilateral uvula-nodulus-flocculus as mossy fibers. The secondary vestibular fibers are distributed bilaterally. The Purkinje cells in the cerebellar cortex receive climbing fiber input which is originated from the contralateral inferior olive; the dorsomedial cell column and β-nucleus. Purkinje cells respond to vestibular stimulation with antiphasic modulation of climbing fiber responses and simple spikes. The vestibulocerebellum imposes a vestibular coordinate system on postural responses and permits adaptive guidance of movement.