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 



