Which portion of the cerebellum connects the right and left cerebellar hemispheres?

1 Answer
Jun 18, 2018

The corpus callosum, which isn't part of the cerebellum at all.

Some spinal tracts decussate at the medulla, but again this isn't really "connecting" two hemispheres directly.

The corpus callosum is a mass of mostly white matter that forms a connection between the two cerebral hemispheres in the brain,

Gray's Anatomy

If you're actually referring to the cerebellar hemispheres (which are neuroanatomically less popular), they are continuous with each other. To be sure, there is no "structure" connecting them.