CORTICAL LOCALIZATION OF FUNCTION 



333 



in one cerebral hemisphere control the movements of the 

 opposite side of the body. 



Sensor Areas. Tactile and temperature impressions. Post- 

 central gyre, in corresponding order with the neighboring pre- 

 central motor area; the postcentral (sensor) and precentral 

 (motor) gyres are so closely associated in the highest category of 

 the reflex arc system represented in the cerebral cortex that 

 they are included under the term of sernesthetic or sensomotor 

 area, devoted to the registration of cutaneous impressions, 

 impressions from the muscles, tendons, and joints; in short, the 

 sense of movement. 



FIG. 56 



Lateral view of left cerebral hemisphere, showing localization of functions. (Gray.) 



Stereognostic Sense Area (concrete perception of the form 

 and solidity of objects). Parietal gyre, and its extension in 

 the precuneus on the mesial aspect. 



Auditory Area. Middle third of supertemporal and adjacent 

 transtemporal gyres in the Sylvian cleft. 



Visual Area. Calcarine fissure, and cuneus as a whole. 



Olfactory Area. Uncus, frontal part of hippocampus, indu- 

 sium, subcallosal gyre, parolf actory area, and anterior perforated 

 substance. 



