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Automatic Stress Classification With Pupil Diameter Analysis

Article dans une revue avec comité de lecture
Author
PEDROTTI, Marco
MIRZAEI, Mohammad Ali
TEDESCO, Adrien
BENEDETTO, Simone
ccMERIENNE, Frédéric
22594 Laboratoire Electronique, Informatique et Image [UMR6306] [Le2i]
ccCHARDONNET, Jean-Rémy

URI
http://hdl.handle.net/10985/7878
DOI
10.1080/10447318.2013.848320
Date
2014
Journal
International Journal of Human-Computer Interaction

Abstract

This article proposes a method based on wavelet transform and neural networks for relating pupillary behavior to psychological stress. The proposed method was tested by recording pupil diameter and electrodermal activity during a simulated driving task. Self-report measures were also collected. Participants performed a baseline run with the driving task only, followed by three stress runs where they were required to perform the driving task along with sound alerts, the presence of two human evaluators, and both. Self-reports and pupil diameter successfully indexed stress manipulation, and significant correlations were found between these measures. However, electrodermal activity did not vary accordingly. After training, the four-way parallel neural network classifier could guess whether a given unknown pupil diameter signal came from one of the four experimental trials with 79.2% precision. The present study shows that pupil diameter signal has good discriminating power for stress detection.

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