1932] Poliak: Afferent Fiher Systems, Primate Cerebral Cortex 261 



Fig. 56, Experiment II. The greater part of the fibers of the degenerated 

 dorsal horizontal branch of the visual radiation (vr) has already descended into the 

 upper lip of the calcarine fissure and fonns here the dorsal half of the calcar avis. 

 The degenerated visual fibers seen here supply a consideral)ly more extensive 

 portion of the striate cortex (marked with a dotted line) which approaches the 

 brim of the upper lip of the calcarine fissure. The limit of the supplied cortex 

 and of tlie striate cortex coincide exactly at the left side; on the right side the 

 degenerated fibers stop at the bottom of the calcarine fissure. Although in this 

 section the striate cortex extends over the entire lateral face of the occipital 

 lobe (Oo = occipital operculum, compare Avith fig. 2) none of the degenerated 

 afferent visual fibers enters it. 



