[Role of the hypothalamus in the reflex regulation of cardiac activity]

Abstract

A review of literary and own experimental data is given. More adequate method in the study of the hypothalamic heart regulation is the investigation of the hypothalamic influences on the cardiac reflexes. The necessity of the experiments on the unanesthetized unrestrained animals is underlined. The dual modulating hypothalamic influences existing already in fishes having been revealed on the unanesthetized animals. The character of the modulating influence is determinated to a certain extent by the cardiac reflex intensity: small responses are increased, larger ones are reduced. The extension of system regions involved into the reflex response pattern at the increase of the degree of temperature effect of venous blood on heart has been discovered in unanesthetized unrestrained cats.