[Modulation of the rhythmic activity of neuron PPa2 of Helix pomatia in response to noradrenaline].

In isolated nervous system of the grape snail Helix pomatia, results of norepinephrine effects upon activity of the PPa2 neurons involved rhythmic activity with maximum of interval distribution within the 2-3-sec range. Norepinephrine induced trains of EPs with maximum of interval distribution within the 10-13-sec range. Endogenous mechanisms of generation of the periodic oscillations of membrane potentials under the effect of norepinephrine, is discussed.