CORPUS CALLOSUM AND VISUAL GNOSIS 



Ronald E. Myers 



A full account oi brain mechanisms in Icarmng must be concerned at 

 the same time with definition of structure and function. Yet, an essential 

 lack of knowledge of both the anatomy anti physiology of learning needs 

 at once to be confessed, clarification of these problems having up to now 

 been approached only in their more gross, macro context. 



Normal 



After Mid-Chiasma 

 Section 



Fig. I 



Optic chiasnia-section results in uTiii.itcr.il restriction of retm.il .iffereiit stmuiiatioii. 



The present discussion will unfortunately carry us only a short step 

 closer to our goal of understanding. We shall be concerned with a side 

 issue — that of characterizing the mechanism of exchange of information 

 between the two brain-halves and this only as it involves visual learning. 



Cats were used as subjects in the experiments to be described. All of 

 these cats were first subjected to mid-sagittal transection of the crossing 



481 



