Authors:
Emeric Desmazure
;
Bertrand Massot
;
Amalric Montalibet
and
Claudine Gehin
Affiliation:
INSA Lyon, Ecole Centrale de Lyon, CNRS, Universite Claude Bernard Lyon 1, CPE Lyon, INL UMR5270, 69100 Villeurbanne, France
Keyword(s):
Electrodermal Activity, Bioimpedance, Multi-Frequency, Spectroscopy, Cole Parameters, Autonomic Nervous System.
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 bioimpedan
ce data.
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