250 BRAINS OF RATS AND MEN 



tex in whose activities the functions of the contiguous 

 projection center are dominant. Thus, there is visual 

 associational tissue surrounding the visual projection 

 center, and so on. But no particular visual memory, 

 or visual image, or visual consciousness whatever, can 

 be thought of as residing there. For each of these 

 things as actually experienced is a complex involving 

 much more than excitation of the specific visual 

 nervous system. Otherwise, there would probably be 

 no awareness of it at all. Our conscious experience — 

 even the simplest of it — is of total situations, not of 

 hypothetical simple elements, whether of sensation, 

 or affect, or any other logical abstraction (Herrick, 



1913. 1915)- 



After thus endeavoring to fortify myself against 



the inevitable misunderstanding, I venture to present 

 the accompanying schemata of the development of 

 the cortical apparatus of association (Figs. 51, 5<i, SS)- 

 I hasten to explain that the projection centers 

 (shaded areas) are actually localized in space and the 

 contiguous primitive associational tissue necessarily 

 conforms roughly with the same mosaic pattern. The 

 remaining parts of the diagrams, and particularly the 

 secondary associational tissue, D, must not be 

 thought of as capable of being projected upon the 

 brain surface in definite geometric or mosaic patterns. 

 On the sensory side the apparatus of cortical 

 resolution of afferent complexes may be conventional- 

 ized as illustrated. Starting on the plane of cortical 



