Wearable Device for Measuring EDA in Constant Alternating Current

This article introduces a novel wearable device, the multisensor wearable wristband (MsW<sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup>), designed to measure electrodermal activity (EDA) and skin temperature using constant ac current instead of the usual constant ac voltage measurement method. Adapted from a previous headband model, MsW<sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> has been optimized for wrist-based applications. Its efficacy was validated through experiments with 25 participants, comparing its EDA measurements with the Empatica E4 device. The results demonstrated high coherence between the two systems. Additionally, a simplified skin impedance model was proposed and validated, providing a reliable means of analyzing EDA data. The wearable demonstrates significant potential for applications in emotion detection, health monitoring, and more.