[The functional role of the posterior hypothalamic field in realizing the responses of the hypothalamo-hypophyseal-adrenal system in rabbits].

The role played by the area of the posterior hypothalamic field in the realization of reactions of the hypophysis-adrenal system in rabbits in response to the stimuli of various nature was studied. Bilateral electrolytic damage of the area under study, without causing any significant changes in the concentration of 11-OCS of the plasma at rest, led to the statistically significant intensification of the hormonal shifts in response to the immobilization, administration of ethinizol and horse serum. Control injries in the preoptic area caused no changes of this kind, and in case of the horse serum led to reverse shifts. The data obtained permitted a conclusion to be drawn that, along with mosaicity of the neuronal structures of the hypothalamus responsible for the hypophysis-adrenal system function individual zones could possess some specific effects, this being expressed in macroinjuries.