Теоретический анализ поляризации омического нейрона, наведенной полем постоянного тока

Abstract

A theory for the DC field-induced polarization of arbitrarily branching dendrites is being suggested. Contributions of the dendrites and the axon to polarisation of the soma are estimated for a quasireconstructed turtle motoneuron. The polarization depends on the length constant monotonously and does not depend on other electrotonic parameters. The measurement of the DC field-induced potential may be used for unique determination of the electrotonic structure of reconstructed cells, provided that a whole-cell recording is employed and the axons are unmye,linated, or truncated, or oriented across the field. Polarization of the distal dendrites is also being analyzed to get insight into the phenomenon of the field-induced steady depolarization of the dendrites.