title: [The effect of neurotropic substances on the self-stimulation reaction at the thalamic level].
abstract: The effect of d-amphetamine, cocaine, caffeine, morphine, imipramine, phenobarbital, LSD-25, benactyzine, meprobamate, diazepam, chloridiazepoxide on the lateral hypothalamic self-stimulation of rats was investigated. D-amphetamine, cocaine, caffeine, morphine, imipramine decreased the threshold of selfstimulation. Meprobamate, diazepam, chlordiazepoxide failed to influence this index, but increase the intensity of self-stimulation during the threshold, the optimum and more than the optimum cirrent intensity. Benactyzine, LSD-25, phenobarbital decreased the threshold and increased the frequency of self-stimulation during all the current intensities. A comparative study of the above results showed the agents of the first group to exert a direct stimulating action on the positive reinforcement system. Tranquillizers activated this system due to their depressive action on the negative reinforcement system. Benactyzine, LSD-25, phenobarbital activated the system and depressed the system of negative reinforcement.
mesh_terms: D000818:Animals; D007031:Hypothalamus / Q000187:drug effects*; D008297:Male; D011619:Psychotropic Drugs / Q000494:pharmacology*; D051381:Rats; D012653:Self Stimulation / Q000187:drug effects*
chemical_list: D011619:Psychotropic Drugs
vernacular_title: Osobennosti vliianiia neĭrotropnykh veshchestv na reaktsiiu samostimuliatsii na gipotalamicheskom urovne