[The cell as an electrical circuit. I. Theoretical part]

The study deals with a theoretical analysis of the interaction between alternating signal and the model presenting the cells as a spatially closed formation with distributed parameters. Particular attention is paid to the distribution of the potential induced by an external alternating signal on the membrane surface; a significant influence of intracellular content on this distribution is proved. It is shown that at some values of electric parameters of the cell and signal frequency definite sites exist on the membrane surface where the conditions are realized at which the potential equals zero.