702 



THE CEREBRUM 



by motor or sensory defects of any kind. Mott and Schaefifer, ^ how- 

 ever, have shown that its stimulation gives rise to symmetrical move- 

 ments on the two sides of the body. Moreover, there is sufficient 

 experimental evidence at hand to prove a distinct localization of these 



^Central fissure 



Posterior central gyrus 

 Anterior central gyrus 



Corpus callosum 

 Fornix 

 Lateral ventricle 

 Thalamus 



Caudate nucleus 

 Internal capsule 



Lentiform nucleus 

 Insula 

 Second temporal gyrus 

 First temporal gyrus 



Clauitrum 

 Inferior horn of lot. vent. 



Hippocampal fissure 

 Optic tract 

 'Hippocampal gyrus 



Uncus 

 Cerebral peduncle 

 pons 

 Pyramid of. medulla oblongata 



Fig. 350. 



-View from the Front of a Coronal Section of an Adult Brain Made 

 Three Inches Behind the Frontal Pole. (J. Symington.) 



fibers, because their stimulation evokes successively movements of 

 the eyes, head, trunk, shoulder, arm, fingers, hip, tail and foot. 



Obviously, therefore, this commissure forms a connection between 

 the two motor areas for the association of symmetrical points of these 

 regions. This fact may be substantiated by the ablation of one motor 



1 Brain, xiii, 1890, 174. 



