Measurement of Input Impedance and Cytoplasmic Resistivity with A Single Microelectrode

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Abstract
A square pulse analysis of the transient, recorded through a microelectrode impaled in a biological cell, yields its input impedance in series with the microelectrode resistance. Calibration of the microelectrode in solutions of different resistivities allows the direct measurement of cytoplasmic resistivity. Measurements in frog sartorius gave results comparable to those reported in the literature.

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