Distinguish self- and hetero-perceived stress through behavioral imaging and physiological features

Publication date: 2 March 2018 Source:Progress in Neuro-Psychopharmacology and Biological Psychiatry, Volume 82 Author(s): Michel Spodenkiewicz, Jonathan Aigrain, Nadège Bourvis, Séverine Dubuisson, Mohamed Chetouani, David Cohen Stress reactivity is a complex phenomenon associated to multiple and multimodal expressions. Response to stressors has an obvious survival function and may be seen as an internal regulation to adapt to threat or danger. The intensity of this internal response can be assessed as the self-perception of the stress response. In species with social organization, this response also serves a communicative function, so-called hetero-perception. Our study presents multimodal stress detection assessment - a new methodology combining behavioral imaging and physiological monitoring for analyzing stress from these two perspectives. The system is based on automatic extraction of 39 behavioral (2D+3D video recording) and 62 physiological (Nexus-10 recording) features during a socially evaluated mental arithmetic test. The analysis with machine learning techniques for automatic classification using Support Vector Machine (SVM) show that self-perception and hetero-perception of social stress are both close but different phenomena: self-perception was significantly correlated with hetero-perception but significantly differed from it. Also, assessing stress with SVM through multimodality gave excellent classification results (F1 score values: 0.9±0.012 for h...

Source: Progress in Neuro Psychopharmacology and Biological Psychiatry - February 6, 2018 Category: Psychiatry Source Type: research