| Abstract: | Isolated stretch receptors of crayfish were investigated by intracellular recording of the electrical activity from the body of the fast or slowly adapting neuron and extracellular recording from the nerve trunk. An increase of activity of one neuron during the plateau of the prolonged action potential (PAP) of another was observed both in the fast and slowly adapting neurons regardless of whether the PAP was formed under the effect of strychnine, novocain, or as a result of the body membrane, or was evoked by orthodromic or antidromic stimulation. In the case of relative equalization of the frequency of the rhythmic activity of the slowly and fast adapting neurons there is a transition from an increase in the firing rate of the fast adapting neuron during the plateau of the PAP of the slowly adapting neuron to complete synchronization of their activity; not only the PAP of one neuron and one or several impulses of another, but also the PAP of both neurons can be synchronized. It is suggested that the relation of the activity of two neurons is due to the effect of the electrical field produced during the PAP. The role of the similarity of the functional state of neurons of an epileptogenic focus in the possible synchronizing action of the electrical field produced by them is examined.Institute of Higher Nervous Activity and Neurophysiology, Academy of Sciences of the USSR, Moscow. Translated from Neirofiziologiya, Vol. 2, No. 3, pp. 321–328, May–June, 1970. |
