How is EDA measured?

Last Updated: Jul 08, 2014 03:20PM EDT

EDA can be measured in many different ways including skin potential, resistance, conductance, admittance, and impedance (ref: Electrodermal Activity by Wolfram Boucsein). The Affectiva Q Sensor provides a way to capture electrical conductance (inverse of resistance) across the skin. This measurement involves passing a minuscule amount of direct current between two electrodes in contact with the skin. The units of measurement are microSiemens (μS).

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