694 



FUNCTIONS OF THE CEREBRUM 



[CH. XLVIII. 



FIG. 503. Lateral view of a human hemisphere, showing the main bundles of association fibres (Starr). 

 A, A, between adjacent convolutions ; B, between frontal and occipital areas ; c, between frontal and 

 temporal areas (cingulum); D, between frontal and temporal areas (fasciculus uncinatus) ; E, 

 between occipital and temporal areas (fasciculus longitudinalis inferior); C.N., caudate nucleus 

 O.T., optic thalamus. 



FIG. 504. Schema of the projection fibres within the brain (Starr). A, tract from the frontal gyri to the 

 pons nuclei and so to the cerebellum ; B, motor pyramidal tract ; c, sensory tract for touch 

 (separated from B for the sake of clearness in the diagram); D, visual tract; E, auditory tract; 

 F, o, H, superior, middle, and inferior cerebellar peduncles ; j, fibres between the auditory nucleus 

 and the inferior corpus quadrigeminum ; K, motor decussation in the bulb; F.V., fourth ventricle. 

 The numerals refer to the cranial nerves. The sensory radiations are seen to be massed towards the 

 occipital end of the hemisphere. 



