Skin Impedance and Phase Angle as a Function of Frequency and Current

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Science  06 Sep 1963:
Vol. 141, Issue 3584, pp. 927-928
DOI: 10.1126/science.141.3584.927


The impedance of the human skin decreased from approximately 130 to 30 Kohm as the frequency of a-c input increased from 1 to 1000 cycles per second. Over this same range of frequencies, the phase angles changed from -2 to -58 degrees. Changing the peak-to-peak current through the subject from 14 to 62 microamperes had no effect or the phase angles.