Afferents to the cerebellar nuclei from the cervical enlargement in the rat, as demonstrated with the Phaseolus vulgaris leucoagglutinin method.

Injections of Phaseolus vulgaris leucoagglutinin into the cervical enlargement labeled spinocerebellar fibers in the rat cerebellar nuclei. Immunoreactive terminal axons and terminals were distributed in the medial nucleus, and the anterior interpositus and the posterior interpositus nucleus. The present study suggests that spinocerebellar neurons in the cervical enlargement (the medial lamina VI and the central lamina VII groups) project to the cerebellar nuclei.