Abstract
The idea of "Deep KANSEI", which represents admiration and healing subconsciously induced by contents of a high artistic quality, is quite important for better understanding of the whole picture of human feeling or KANSEI. As a possible device producing Deep KANSEI, we have been developed a remarkable sound system, named Extra HI System M (EHISM).
Our previous psychophysical studies showed that EHISM could affect a human psychological state. However, it has not yet known if such a change in psychological, thus verbalized, state brought by EHISM were accompanied with a change in physiological states. In this study, we investigated the relationship between the psychological and physiological stress responses induced by EHISM. With regard to the psychological stress scale, the term "tension" and "relaxing" were interviewed before and after the sound stimulus by EHISM or other conventional sound system (control). With regard to the physiological stress scale, 3 kinds of possible stress biomarkers, i.e., cortisol, immunoglobulin A (IgA), and chromogranin A (CgA), were assayed by saliva taken 3 min before and after the sound stimuli. The results suggested the close relationship between these psychological and physiological scales. Finally, we discussed our results in relation to the possibility of objective assessment scale of Deep KANSEI.
