BASAL GANGLIA 



473 



Lower limb a 



Trunk a 



Upper limb area 



Face area 



Putanien, globus pallidus, 



and medullary laminae of 



lentiform nucleu; 



Irisula 



Acoustic area' 



Acoustic radiations' 

 Claustrum' 



Optic radiations 



Calcar avis 



^Anterior horn 

 of lateral ventricle 



.Caudate nucleus 



Anterior segment of 

 'internal capsule 



Face fibres in genu 

 of internal capsule 



Upper limb "\ Anterior 

 fibres of posterior 



-Trunk fibres ^division of 

 Lower limb internal 

 fibres J capsule 



Sensory fibres 



Thalamus 

 Crus of fornix 



Hippocampus 

 Splenium of corpus cal- 

 losum (horizontal section) 

 Cuneus (ver- 

 tical section) 

 Calcarine fissure 



Lingual gyrus 



(horizontal 



section) 



Visual 

 area 



FIG. 191. Diagram showing the Motor and the Acoustic and Visual Areas 

 of Left Hemisphere and their relations to the Internal Capsule. 



The internal capsule and the auditory and visual areas are seen in 

 horizontal section. The motor areas, in red, are supposed to be in vertical 

 section and to be placed at right angles to the horizontal section. 



The area of ordinary sensation is not shown, but the fibres from it lie 

 mainly in the posterior third of the posterior division of the internal capsule. 



