Cholinergic and adrenergic influences upon cat skeletal muscle performance induced by stimulation of the anterior hypothalamus

摘要: The influence exerted by stimulation of the anterior hypothalamus (zone cholinergic vasodilatation) on performance triceps surae during tetanic contraction has been investigated. Hypothalamic stimulation, if combined with indirect muscle improves performance, i.e. slows down rate decrease contraction. effect is abolished atropine (0.5 mg/kg) and insensitive to propanolol (0.1 mg/kg). only effective hypothalamic coincides beginning motor nerve stimulation. In some our experiments same central structures elicited another associated release adrenaline into blood. this case, contrary influence, force increases when does not start earlier than 100 s after initiation (phase slow decline tension).