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This paper presents a study on multi-modal human emotional state detection while riding a powered wheelchair PMV; Personal Mobility Vehicle in an indoor labyrinth-like environment. The study reports findings on the habituation of human stress response during self-driving. In addition, the effects of -loss of controllability-, change in the role of the driver to a passenger, are investigated via an autonomous driving modality. The multi-modal emotional state detector sensing framework consists of four sensing devices: electroencephalograph EEG, heart inter-beat interval IBI, galvanic skin response GSR and stressor level lever in the case of autonomous riding. Physiological emotional state measurement characteristics are organized by time-scale, in terms of capturing slower changes long-term and quicker changes from moment-to-moment. Experimental results with fifteen participants regarding subjective emotional state reports and commercial software measurements validated the proposed emotional state detector. Short-term GSR and heart signal characterizations captured moment-to-moment emotional state during autonomous riding Spearman correlation; ρ = 0.6, p < 0.001. Short-term GSR and EEG characterizations reliably captured moment-to-moment emotional state during self-driving Classification accuracy; 69.7. Finally, long-term GSR and heart characterizations were confirmed to reliably capture slow changes during autonomous riding and also of emotional state during participant resting state. The purpose of this study and the exploration of various algorithms and sensors in a structured framework is to provide a comprehensive background for multi-modal emotional state prediction experiments and-or applications. Additional discussion regarding the feasibility and utility of the possibilities of these concepts are given.

Autor: Jamilah Abdur-Rahim , Yoichi Morales , Pankaj Gupta , Ichiro Umata , Atsushi Watanabe , Jani Even , Takayuki Suyama, Shin Ishii



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