CENTRAL NERVOUS SYSTEM. 



685 



FIG. 184. Brain of the macaque monkey, showing the sensory and motor areas. In the sensory region 

 the name of the sensation is over the locality most closely associated with the corresponding sense-organ ; 

 in the motor region the name of the part is written over the portion of the cortex which controls it. The 

 upper figure gives a lateral view of the hemisphere, and the lower a dorsal view (Beevor and Horsley). 



divisions. These are subdivided into areas for the muscle-groups belonging 

 to different members of the body arms, head, trunk, etc., or those areas 



PoF. 



FIG. la 1 ). Mesial surface of the brain (monkey). The localization of motor functions is indicated 

 along the shaded portion of the marginal gyrus. The location of the visual area is indicated at the tip of 

 the occipital lobe, and the location of the olfactory area at the tip of the temporal (Horsley). 



