Biophysical mechanisms of formation of nonlinear electric properties of skin are discussed. The possibility of corneal layer monitoring during transdermal delivery of medication, examination of skin moisture, and evaluation of functional and psychoemotional state is demonstrated. The suggested monitoring technique is based on measurements of linear and nonlinear components of electric admittance of skin. As a result of research on the nonlinear equivalent circuit of electric admittance of skin, errors in measurement of its parameters for third-order power series approximation of skin conductance are determined. The interconnections between the relative error of calculation of polynomial coefficients, the electric capacity, the corneal layer hydration rate, and the normalized magnitude of interference caused by near-electrode electrochemical processes, as well as industrial power-line noise, are established.
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Translated from Meditsinskaya Tekhnika, Vol. 47, No. 1, Jan.-Feb., 2013, pp. 32-35.
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Karpukhin, V.A., Kosorukov, A.E. Study of a Method for Identification of Parameters of the Nonlinear Equivalent Circuit of Electric Admittance of Skin. Biomed Eng 47, 39–42 (2013). https://doi.org/10.1007/s10527-013-9330-0
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DOI: https://doi.org/10.1007/s10527-013-9330-0