THE BRAIN OF MODERN MAN 



813 



I Ins l;ii-ri';iclini<j, modilicat ion must haw expressed itself In nuinx prolound 

 aitcratiDiis in tin- nu'clianism ol locomotion and produet'd changt's m the 

 essential substratum ol the balanemii meehanism. 



MG. 34-. MAN. LE\EL Ol- lilL \LS11BILAK M CLEl. 



err, Ontral I igiiunt;il Fnict; (.ou, \iiitral SpinociTcbcllar Tract; ice, Infcridr (,rrcl)fllar PidiiMtlc; 10, 

 Infcridr Olive; mi-, Mi-sial Fillt-t; M>, Di-iti-rs' Nuclous; nis, Solitar\ Nucleus; nk, Nucleus of Rolando; nsc, 

 Scliwalbo's Nucleus; i>D, Prcdorsal Bundle; i>L, Posterior Longitudinal Fasciculus; i-v, Pyramid; ref. 

 Reticular Formation; kst, Rubrospinal Tract; spt, Spinothalamic Tract; trd. Descending Trigeminal Tract; 

 TUB, Tubereuluni Acusticum. [Accession Man. Section C 189. Actual Size 22 X 12 mm.] 



In man the xestibular eomplex consists of a small-celled tnangtilar 

 nucleus of Schwalbe (NSc) and a large-celled nucleus of Deiters (ND) 

 scattered through which are many small bundles of heavily myelinized 

 libers. Entering fibers from the Nt'stibidar di\ision ol the eighth ner\e make 

 their way inward and pass through the ventral e\tremit\ ol the restiform 



