Related papers: Video-based sympathetic arousal assessment via peripheral blood flow estimation

Video-based sympathetic arousal assessment via peripheral blood flow estimation

URL: http://arxiv.org/abs/2311.06930v1
Date: Sun, 12 Nov 2023 19:06:33 GMT
Title: Video-based sympathetic arousal assessment via peripheral blood flow estimation
Authors: Bjoern Braun, Daniel McDuff, Tadas Baltrusaitis, Christian Holz
Abstract summary: We present a novel approach to infer sympathetic arousal by measuring the peripheral blood flow on the face or hand optically. We show that sympathetic arousal is best inferred from the forehead, finger, or palm.
Score: 46.695433930419945
License: http://creativecommons.org/licenses/by-nc-nd/4.0/
Abstract: Electrodermal activity (EDA) is considered a standard marker of sympathetic activity. However, traditional EDA measurement requires electrodes in steady contact with the skin. Can sympathetic arousal be measured using only an optical sensor, such as an RGB camera? This paper presents a novel approach to infer sympathetic arousal by measuring the peripheral blood flow on the face or hand optically. We contribute a self-recorded dataset of 21 participants, comprising synchronized videos of participants' faces and palms and gold-standard EDA and photoplethysmography (PPG) signals. Our results show that we can measure peripheral sympathetic responses that closely correlate with the ground truth EDA. We obtain median correlations of 0.57 to 0.63 between our inferred signals and the ground truth EDA using only videos of the participants' palms or foreheads or PPG signals from the foreheads or fingers. We also show that sympathetic arousal is best inferred from the forehead, finger, or palm.

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