Abstract
Thermal infrared imaging has been proposed as a potential system for the computational assessment of human autonomic nervous activity and psychophysiological states in a contactless and noninvasive way. Through bioheat modeling of facial thermal imagery, several vital signs can be extracted, including localized blood perfusion, cardiac pulse, breath rate, and sudomotor response, since all these parameters impact the cutaneous temperature. The obtained physiological information could then be used to draw inferences about a variety of psychophysiological or affective states, as proved by the increasing number of psychophysiological studies using thermal infrared imaging. This paper presents therefore a review of the principal achievements of thermal infrared imaging in computational physiology with regard to its capability of monitoring psychophysiological activity.
Highlights
Understanding affective and psychophysiological states of a conversational interlocutor is fundamental for setting a proper communication, establishing social and affective ties, choosing social strategies, and maintaining a contingent interaction
This paper presents a review of the principal achievements of thermal infrared imaging in computational physiology with regard to its capability of monitoring psychophysiological activity
In order to exceed limitations derived from the use of contact sensors, computational psychophysiology based on imaging approach can be recommended
Summary
Understanding affective and psychophysiological states of a conversational interlocutor is fundamental for setting a proper communication, establishing social and affective ties, choosing social strategies, and maintaining a contingent interaction. In order to exceed limitations derived from the use of contact sensors, computational psychophysiology based on imaging approach can be recommended To this goal, thermal infrared (IR) imaging has been proposed as a potential solution for noninvasive and ecological recording of ANS activity [6]. Given the proper choice of IR imaging systems, optics, and solutions for tracking the regions of Computational and Mathematical Methods in Medicine interest, it is possible to avoid any behavioral restriction of the subject [18, 19] This possibility is important, for example, in the developmental psychology or humanartificial agent interaction fields. The general intent of the paper is to provide insights about its potentialities and limits for its use in quantitative psychophysiology
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