THE MOTOR CENTRES IN MAN. 



747 



accompanying diagram (Fig. 339) gives the main results of Beevor and 

 Horsley's investigation. 



The motor centres in man Experimental evidence. A few 



A. 



B. 



FIG. 340. Diagrams indicating the probable localisation of the chief motor and 

 sensory areas of the cerebral cortex of man. A, lateral surface ; B, mesial 

 surface. 



experimental observations have been made upon man, the cortex having 

 been on several occasions stimulated over a limited area exposed for the 



