Resting and action potentials recorded by the sucrose‐gap method in the superior cervical ganglion of the rabbit

摘要: 1. Evoked ganglionic action potentials and drug-induced changes in resting potential were recorded by the sucrose-gap method. The height of was 10-20 mV.2. Since amplitude P wave is inversely proportional to external potassium concentration between 0.5 12 mM, probably caused a phase increased permeability K(+).3. In absence an anticholinesterase, depolarizing actions choline acetylcholine on ganglion are almost equal, whereas 2-3 times more potent than fibres internal carotid nerve. presence eserine, induces depolarization up 14 mV, while increase [K(+)](o) causes 55 mV.4. Although post-ganglionic distal pole depolarized drugs, for example, acetylcholine, they contribute little evoked potentials.5. hyperpolarization which occurs after exposure not due K(+).