[Analysis of the effect of increasing electrodermal stimulation on the somatovegetative reactions evoked by stimulation of the ventromedial hypothalamus].
The influence of increasing electrodermal stimulation (EDS) on the dynamics of the somatovegetative reactions evoked by electrical stimulation of negative emotiogenic regions of the hypothalamus was studied. EDS produced a blocking effect on the somatovegetative reactions evoked by stimulation of the ventromedial hypothalamus (VMH). Pretreatment with naloxone prevented the effects of EDS. Injection of beta-endorphine in a dose of 10 micrograms to the lateral ventricules of the animal brain also blocked the somatovegetative reactions during VMH stimulation. Injection of beta-endorphine in doses of 50-100 micrograms enhanced and prolonged the somatovegetative reactions evoked by VMH stimulation. Elevated arterial blood pressure, pronounced bradycardia, extrasystoles, muscle tremor, and pathologic respiration were recorded. These disorders were completely reversed by EDS. It is assumed that both opiate peptides and their receptors are involved in the mechanism of the somatovegetative reactions evoked by VMH stimulation, experiencing the influence of EDS.
D000818:Animals; D001341:Autonomic Nervous System / Q000502:physiology*; D001794:Blood Pressure / Q000187:drug effects; D004558:Electric Stimulation; D004723:Endorphins / Q000494:pharmacology; D006339:Heart Rate / Q000187:drug effects; D007033:Hypothalamus, Middle / Q000502:physiology*; D009132:Muscles / Q000187:drug effects / Q000502:physiology; D009270:Naloxone / Q000494:pharmacology; D011817:Rabbits; D012119:Respiration / Q000187:drug effects; D012879:Skin Physiological Phenomena; D001615:beta-Endorphin
D004723:Endorphins; D009270:Naloxone; D001615:beta-Endorphin
Analiz deĭstviia narastaiushcheĭ élektrokozhnoĭ stimuliatsii na somatovegetativnye reaktsii, vyzvannye élektricheskim razdrazheniem ventromedial'nogo gipotalamusa.