44 ATLAS OF NERVE CELLS 



In the superior cerebellar peduncle are a number of fibres which go beyond the red 

 nucleus and enter the optic thalamus. 



Thus it is evident that the cerebellum has intimate relations with all other parts of the 

 nervous system, a fact which its principal physiological function, that of adjustment of the 

 equilibrium, would naturally presuppose. 



If we review the facts thus far stated, it is evident that there are several ways in which 

 the impulses sent to the cerebellum may awaken a response. 



The impulses which reach the moss work of the granular layer set in action the granule 

 cells ; these in turn, through their fibres which enter the molecular layer, may set in action 

 either the Purkinje cells through their dendrites or the stellate cells ; if the latter are set in 

 action, they may arouse the Purkinje cells by way of the baskets, and then the Purkinje cell 

 may send its impulse outward by its long neuraxon. The impulses which reach the molecular 

 layer by the ivy-like arrangement of fibres come into direct contact with the Purkinje cell, or 

 may act first on the stellate cells and then on the Purkinje cell by the basket fibres. 



