RECONSTRUCTION OF MVCETES SENICULUS 



23Q 



cochlear nerve, therefore, is uncovered by this nuclear material mesially 

 where it comes into contact with the brain stem. The nuclear material 

 extends along the course of the nerve, interspersed between its fibers. As 



FIG. 131. LATERAL SURFACE OF THE GRAY >L\TTER OF THE BRAIN STEM, 

 MYCETES SENICULUS. 



Key to Diagram, lat. gen. bodv. Lateral Geniculate Body; m.g.b.. Mesial Geniculate Body; nucl. of 

 BURDACH, Nucleus of Burdach; N. 01- deiters and nucl. of deiters, Nucleus of Deiters; pontile, Pon- 

 tile Nuclei; ret. form., Reticular Formation; subst. gel. rolando, Substantia Gelatinosa of Rolando; 

 SUBST. nigra. Substantia Nigra; ventral cochlear. Ventral Cochlear Nucleus. 



the cochlear nerve is traced into the dorsolateral angle of the brain stem 

 another nuclear complex connected with the cochlear apparatus makes its 

 appearance — the dorsal cochlear nucleus which hes in the lateral recess of 

 the fourth ventricle, dorsal to the vestibular complex. This nucleus is tri- 

 angular in shape, its base resting upon the subependymal gray matter, its 

 lateral border directed toward the inferior and middle cerebellar peduncles 

 and its mesial border Ij'ing against the vestibular complex. 



