13^ 



Neurological Technique 



Does the substantia corticalis vary in thickness ? Why ? 

 What is the significance of the radiatio occipito-thalamica ? 



Section 14, to pass through the superior extremity of the 

 gyrus centralis posterior, the posterior portion of the thalamus 

 opticus (pulvinar), and on the ventral surface to pass through or 

 involve a portion of the cut surface of the pedunculus cerebri. 



Fig. 2. 



Slightly diagrammatic representation illustrating the division of the encephalon as 

 directed in II, p. 121. The lines passing through the specimen indicate the planes 

 in which sections of the prosencephalon (13 to 17) are to be taken. 



Draw, giving special attention to the following structures : 

 Corona radiata, corpus callosum, fornix, tela choroidea ven- 

 triculi tertii (velum interpositum), thalamus (pulvinar), pedun- 

 culus cerebri, tractus opticus, capsula interna, and claustrum. 

 Cornu inferius ventriculi lateralis, cauda nuclei caudati, plexus 



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