212 THE NERVOUS SYSTEM 



oblongata on the same side, or are continued as ventral external arcuate fibers 

 to end on the opposite side. The bundles which run from the nucleus fastigii 

 to the medulla oblongata may be designated as the fastigiobulbar tracts (tractus 

 cerebellotegmentales bulbi). These include fibers which terminate in the 

 lateral vestibular nucleus. It is said that some fibers belonging to this system 

 leave the cerebellum by way of the brachium pontis (tractus cerebellotegmentalis 

 pontis). 



Since the dentate nucleus receives fibers from the cortex of the correspond- 

 ing cerebellar hemisphere, and the nucleus fastigii receives similar fibers from 

 the vermis, it may be inferred that the brachium conjunctivum is the chief 

 efferent tract for the hemisphere and that the fastigiobulbar tracts serve the 

 same purpose for the vermis (Strong, 1915). 



