[Measurement of the propagation rate of the summation action potential in the vomeronasal and olfactory nerves of Rana temporaria frogs].

It was shown that summation action potential (AP) in various points of the nerve result from summation AP in various bundles of fibres. The rate of propagation of AP in various bundles may differ rather significantly. Propagation of AP from the site of stimulation takes place with acceleration, which is presumably due to the inhibitory effect of the stimulus at the site of its application (together with the excitatory effect as well). Both nerves exhibit also supernormal phenomenon which reveals itself in the increase of the propagation rate of the second AP during stimulation by paired stimuli.