The electric field induced by a microelectrode inserted in a nerve cell is investigated in order to interpret the results obtained by the single and double probe techniques. The solution is obtained by means of a singular perturbation expansion in terms of the ratio of the membrane conductance to the cell conductivity. Both finite and infinite cells are considered and special attention is devoted to the spherical and cylindrical geometries.
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Barcilon et al. (1971) studied this question.
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