1932] Poliak: Afferent Fiber Systems, Primate Cerebral Cortex 239 



Fig. 34, Experiment I. A section showing the large lesion (L) in the posterior 

 segment of the thalamus and pulvinar {Pulv), and in the internal geniculate body 

 (Cgm). The posterior fan of the somatic sensorj' radiation (sr), composed of 

 numerous fibers, enters the posterior limb of the internal capsule and takes a fairly 

 direct ascending course toward the postcentral convolution (CP). Some fibers 

 reach also the cortex lining the posteentral-intraparietal sulcus but none deviates 

 toward the corpus callosum. A portion of the internal segment of the external 

 geniculate body (Cgl) has also been injured. All auditory fibers enter the 

 inferior lip of the Sylvian fissure (FS) belonging to the superior temporal con- 

 volution (r,)» none of them reaching the middle (TO or the inferior temporal 

 convolution {T3). 



