title: [Neurophysiologic analysis of the effect of ACTH and hydrocortisone on conditioned reflex behavior in cats].
abstract: In defensive behaviour of cats, ACTH eliminated extinction delay, evoked by electrical stimulation (with constant parameters) of the midbrain reticular formation, and enhanced the activating influence of the thalamus reticular zone. Hydrocortisone produced opposite effects. In alimentary behaviour, the adaptive hormones enhanced the facilitating effect on extinction, induced by stimulation of non-specific structures and the hypothalamus. However, during hydrocortisone action, encephalographic signs of the reflex remained for a long time after extinction of effector manifestations. Thus, ACTH and hydrocortizone, by changing the interaction between brain structures, exert certain influences on the behavioral processes. The hormonal effects, in turn, depend on the initial co-excitation of the centres.
mesh_terms: D000324:Adrenocorticotropic Hormone / Q000494:pharmacology*; D000374:Aggression; D000818:Animals; D002415:Cats; D003213:Conditioning, Psychological / Q000187:drug effects*; D004558:Electric Stimulation; D005108:Extinction, Psychological / Q000187:drug effects*; D005502:Food; D006801:Humans; D006854:Hydrocortisone / Q000494:pharmacology*; D007031:Hypothalamus / Q000187:drug effects; D008297:Male; D008636:Mesencephalon / Q000187:drug effects; D012154:Reticular Formation / Q000187:drug effects; D013788:Thalamus / Q000187:drug effects
chemical_list: D000324:Adrenocorticotropic Hormone; D006854:Hydrocortisone
vernacular_title: Neĭrofiziologicheskiĭ analiz vliianiia AKTG i gidrokortizona na uslovnoreflektornoe povedenie koshek