FIG. 16. 



SIDE VIEW OF THH BRAIN OF MAN, WITH THE AREAS OF THE CEREBRAL CONVOLUTIONS, 

 ACCORDING TO FERRIER. 



The figures are constructed by marking on the brain of man, in their respective 

 situations, the areas of the brain of the monkey as determined by experiment, and 

 the description of the effects of stimulating the various areas refers to the brain of 

 the monkey. 



(i) Advance of the opposite hind limb, as in walking. 

 (2). (3), (4) Complex movements of the opposite leg and arm, and of the trunk, as in 



swimming. 

 (a), (b), (c), (d) Individual and combined movements of the fingers and wrist of the 



opposite hand. Prehensile movements. 



(5) Extension forward of the opposite arm and hand. 



(6) Supination and flexion of the opposite forearm. 



(7) Retraction and elevation of the opposite angle of the mouth, by means of the zygo- 

 matic muscles. 



(8) Elevation of the ala nasi and upper lip, with depression of the lower lip on the oppo- 

 site side. 



(9), (10) Opening of the mouth, with (9) protrusion and (10) retraction of the tongue; 



region of aphasia, bilateral action. 



(n) Retraction of the opposite angle of the mouth, the head turned slightly to one side. 

 (12) The eyes open widely, the pupils dilate and the head and eyes turn toward the 



opposite side. 

 (13), (13') The eyes move toward the opposite side with an upward (13) or downward 



(13') deviation. The pupils are generally contracted. 

 (14) Pricking of the opposite ear, the head and eyes turn to the opposite side, and the 



pupils dilate largely. 



141 



