THE BRAIN OF MODERN MAN 



-8^ 



whirl) in the lower primates are preeminent because of theii' rich convohi- 

 tional pattern, m man seem to ix- less strikmij; when compared with'the 

 Irontal and occipital lobes. 



FIG. 338B. DETAILED DIAGRAM OF BASE OF BRAIN, HOMO SAPIENS. 



The Jraulal Lohc. The lateral surface of the frontal IoIh' presents a 

 superior, middle and inferior frontal couNolution as well as a precentrai 

 convolution sometmies spoken ol as the ascending Irontal con\ oiution. 

 All o( these con\()lutions are exceedingly irregular in outline, and separated 



