710 



THE CEREBELLUM 



bellum into relation with the cortex of the frontal and parietal lobes of the opposite 

 side. The middle peduncle also embraces efferent fibers which are derived from 

 the cells of Purkinje and, after their decussation in the pons, descend in the lateral 

 funiculus of the cord. They eventually terminate around the motor cells of the 

 anterior horns. 



^erebeffufT) 



Tr olivo-cereb. 

 tr.spino- 

 cereb. dors. 



(Flechs 



brachium" 

 conjuncTivum 



V: tecto-cereb. 



tr. ponto-ceretx 



mesencephalon 



Tr Spino-oljvan 

 tr cortico-spinalis^ 



central 



tegmental 



tract. 



tr. cortico- 

 olivQ interior pontd.'s 



tr spino - cereb- ventr. (Gowers) 



Fig. 357.- 



-DlAGRAM OF THE ChIEF AFFERENT TrACTS LeADING INTO THE CEREBELLUM. 



(Herrick.) 



The inferior peduncle is composed principally of afferent fibers which take their 

 origin either in the spinal cord or in the bulb. The former constitute the continua- 

 tion of the direct cerebellar tract and ascend through the corpus restiforme into the 

 vermis of the cerebellum. ^ We have seen that this tract includes the axons of the 



cerebellum 



nuc. dentatus 



roof nuclei 

 corpus restiforme 



rachium pontis 

 brachium ^ , 

 conjunctivum 



tr. cereb.-teqmenTaiis 

 hali 



mesencephalon' 



bro-thol.. 



oliva infei 



1r. cerebejlo- 



tegmentojis 



pontis 



tr. cerebeilo-tegmentalis buibi, 



Fig. 357a. — Diagram of the Chief Efferent Tracts leading out of the Cerebellum. 



(Herrick.) 



cells of Clark's column and collaterals from the posterior roots of the cord. The 

 medullary fibers form the continuation of the vestibular division of the auditory 

 nerve and connect the nuclei of Deiters and Bechterew with the nucleus fastiguus 



1 Thomas, Le Cervelet, Paris, 1897. 



