LOCALISATION IX CEREBRAL CORTEX 531 



duriny life were found after death to have suifered from 

 disease or injury of the third frontal concolntion of the left 



PISSI//>£ OF RoLANOO 



Fr.L 



OcL 



Te.L 

 FiQ. 170. — Diagram of Outer Si-rface of Right Cerebhal Hemisphbbk 



TO SHOW THE POSITION OF CORTICAL AREAS. 



The areas for the leg, arm, and face are marked by vertical lines, 

 horizc^ntal lines, and dots respectively. The area for speech lies really in 

 a similar position on the left hemisphere. 



Fr.L. frontal lobe ; Oc.L. occipital lobe ; Te.L. temporal lobe ; 

 Sy.P. fissure of Sylvius. 



Fissure of Rolando 



Par Oc F 



OcL 



TeL 



Fig. 171. — Diagram of Inner (JIesjalj Surface of the Right Cerebral 

 Hemisphere to show the Position of Cortical Areas. 

 The cofpus callosum is seen shaded in section. 



Fr.L. frontal lobe ; Oc.L. occipital lobe ; Te.L. temporal lobe ; 

 Par-Oc.F. parieto-occipital fissure. 



side of the brain immediately above the Sylvian fissure ; 

 hence, this part of the cortex is known as Broca's con- 



ii M 2 



