302 



BRAIN MECHANISMS AND LEARNING 



archistriatuni influencing the pituitary-adrenocortical system then comes 

 into prominence. It is an interesting fact that the animals clectrocoagulatcd 

 in the subcallosal area did not show sexual hyperactivity. The pituitary- 

 adrenc^cortical activity, however, was in accordance with that of animals 

 stimulated in the amygdale-pyriform complex. The lesion of these path- 

 ways resulted in a separation of behavioural and endocrine processes 

 integrated by the telencephalon. 



bo ■ 



So 



Uo 



\o 



l?-3H 



Control 

 6 



SZ-bS 



i 



// 



m-5? 



Histamine 



5 



Fig. 8 



AHer 5t"»mu\ot\o(\ 



5 



Prevention of histamine induced adrenocortical hypcrfunction, 

 induced by hippocampal stimulation. 



Summing up the above-mentioned results, we may say that common 

 subcortical mechanisms take part in neuroendocrine control and in 

 elaborating emotional or sexual behaviour. Naturally, for these complex 

 integrating mechanisms we must take into account the feed-back action of 

 the humoral system as we have demonstrated by the stimulation of area 

 pyriformis (Endroczi, Lissak, Bohus and Kovacs, 1959; Lissak, Endroczi, 

 Bohus and Kovacs, 1958; Endroczi, 1959). 



It may be asked in what way those neuroendocrine controlling 



