234 University of California Puhlications in Anatomy [Vol.2 



Fig. 29, Experiment I. The degenerated thalamocortical radiation (sr) 

 emerges from the thalamus (Th) where the lateral nucleus was injured (L ^lesion) 

 without injury to the internal capsule; it ascends toward the precentral (CA) and 

 the postcentral convolution (CP) and to the cortex lining the central sulcus (6"). 

 None of these fibers enters the corpus callosum. Bundles of the auditor}' radiation 

 (ar) partly still in the globus pallidus and in the putamen, partly already lateral 

 to the latter nucleus below the ventral "spur" of the cla.ustrxiin ; they enter the 

 superior temporal convolution (T,), reaching the cortex of the ventral wall of the 

 Sylvian fossa (FS) exclusively. None of the auditory fibers enters the cortex 

 lining the superior temporal sulcus {St\). The origin of the auditory radiation is 

 seen in figs. 33, 34; its course through the internal capsule in figures 33, 32, 

 31, 30. (These figures also show bundles of the auditory fibers passing between 

 the islets of the putamen.) 



