THE NEOPALLIUM. 



351 



according to Flechsig, the association centers and it may be divided 

 into three main fields, the anterior, middle and posterior associ- 

 ation fields (Fig. 179). That these fields are primarily related 



Fig. 179. Diagram of lateral surface of hemisphere showing localization of 

 functions. 



Fig. 180. Diagram of mesial surface of hemisphere showing localization of 

 functions. 



to the senso-motor areas is shown by the fact that the myelinization 

 of the cortex spreads from the senso-motor areas to the cortex 



