[The action of amtizol on the plastic properties of the membrane of Retzius' neuron in the leech].

Extracellular application of amtysol decreased the amplitude and increased the duration of evoked APs, not affecting the form of spontaneous APs in the leech Retzius' neurons. Besides, a disorder in the habituation process occurred which only normally develops during a high-frequency synaptic activation of the neurons.