Evaluating Time-Constant Models in Electrodermal Activity Using Continuous Multi-Frequency Impedance Spectroscopy

Emeric Desmazure, Bertrand Massot, Amalric Montalibet, Claudine Gehin

2025

Abstract

A continuous multi-frequency impedance spectroscopy sensor, capable of measuring 16 frequencies, was developed to investigate electrodermal activity. Data was collected from a healthy volunteer over a 30-minute resting period, minimizing interference from the autonomic nervous system. The resulting data were processed with a custom Python algorithm utilizing the ImpedanceFitter library, enabling comparison across models incorporating one, two, and three Cole behaviours. A significant enhancement in accuracy was achieved with the two Cole behaviours over the single Cole behaviour approach, while no additional improvement was observed with a third Cole behaviour. These findings suggest that the two Cole behaviours model provides optimal performance in capturing the complexity of electrodermal activity. Future research will extend this analysis to a larger cohort, exploring how variations in protocol, electrode type, and stimulus may refine the modelling and interpretation of bioimpedance data.

Paper Citation

in Harvard Style

Desmazure E., Massot B., Montalibet A. and Gehin C. (2025). Evaluating Time-Constant Models in Electrodermal Activity Using Continuous Multi-Frequency Impedance Spectroscopy. In Proceedings of the 18th International Joint Conference on Biomedical Engineering Systems and Technologies - Volume 1: BIODEVICES; ISBN 978-989-758-731-3, SciTePress, pages 157-162. DOI: 10.5220/0013151400003911

in Bibtex Style

@conference{biodevices25,
author={Emeric Desmazure and Bertrand Massot and Amalric Montalibet and Claudine Gehin},
title={Evaluating Time-Constant Models in Electrodermal Activity Using Continuous Multi-Frequency Impedance Spectroscopy},
booktitle={Proceedings of the 18th International Joint Conference on Biomedical Engineering Systems and Technologies - Volume 1: BIODEVICES},
year={2025},
pages={157-162},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0013151400003911},
isbn={978-989-758-731-3},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 18th International Joint Conference on Biomedical Engineering Systems and Technologies - Volume 1: BIODEVICES
TI - Evaluating Time-Constant Models in Electrodermal Activity Using Continuous Multi-Frequency Impedance Spectroscopy
SN - 978-989-758-731-3
AU - Desmazure E.
AU - Massot B.
AU - Montalibet A.
AU - Gehin C.
PY - 2025
SP - 157
EP - 162
DO - 10.5220/0013151400003911
PB - SciTePress