DISCUSSION 165 



sound, and of the movements required for its 

 production. On this is based the localisation 

 of the cerebral functions, as far as hitherto it 

 has been proved, whilst definite psychological 

 processes are connected by their physiological 

 element with a definite brain centre. 



This localisation rests upon a physiological 

 division of labour, and proves nothing at all 

 against the simplicity of the soul. As the above- 

 mentioned psychical processes, in their actual 

 connection with one another and with sense 

 attention, practically occupy the whole area of 

 the cerebral cortex, the soul must necessarily 

 be present at every point of the cerebral cortex, 

 just as it must be present in every part of the 

 body to which it imparts life. It does not, 

 however, follow that the soul itself is anything 

 compound, as Juliusburger maintains, for a 

 simple entity can at the same time be present 

 at various points of an extended body. 



Hitherto no trustworthy evidence has been 

 adduced to show that the higher psychical 

 functions, the intellectual activity, strictly so 

 called, can be localised in any definite regions 

 of the cerebral cortex. I agree with K. von 

 Monakow, who says on this subject that we 

 have not yet ' advanced beyond an uncertain 

 groping about on the surface of the brain.' 

 (Ergebnisse der Physiologic, iii., 1904, Part u. 

 p. 122.) 



