114 



VETERINARY PHYSIOLOGY 



and other basal ganglia that the cortex cerebri originally 

 developed, and in lower vertebrates the separation is incom- 

 plete except as regards the rhinencephalon, which originally 

 developed independently as the centre for the olfactory 

 organs (p. 133) ; (fig. 50, V., S., VI 1 1.). 



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Fig. 51. — To show the mapping out of the Cerebral Cortex in man on its 

 outer and inner aspects into areas by the cliaracter and distribution of 

 the cells, and fibres to show the convolution round the central fissure 

 connected with the reception of stimuli from the body-receptors. 

 (Campbell.) 



In the thalamus the ingoing fibres from the body 

 receptors are brought into close association with those from 

 the distance receptors of the head, the eye, and the 

 ear, and in this region there is some evidence in man that 



