ABSTRACT
The cerebellum lies caudal and inferior to the occipital lobes and dorsal to the pons and midbrain (Figures 6.1 and 6.2). Gross examination of the cerebellum reveals a corpus cerebelli with inputs from the spinal cord and pontine and trigeminal nuclei, and a occulonodular lobe that maintains primary connections to the vestibular nuclei. The corpus cerebelli is subdivided into regions that receive spinal and pontine inputs and is connected to the midbrain, pons, and medulla via the superior, middle, and inferior cerebellar peduncles, respectively. The inferior cerebellar peduncle is medial to the middle cerebellar peduncle and consists of a dorsolateral part, the restiform body that contains afferents derived from the spinal cord and medulla (olivocerebellar, spinocerebellar, cuneocerebellar, and trigeminocerebellar tracts), and a medial part, which consists of mainly of efferent bers (fastigiovestibular, Purkinje, and cerebellovestibular bers) with some vestibular afferent (secondary and primary vestibulocerebellar bers) bers.
