2019 年 23 巻 1 号 p. 18-24
A new method of vital stimulation apart from the visual and auditory senses using modulated far-infrared rays is proposed. The somatic sense is stimulated to provide the feeling of presence of a human being. Fundamental experiments are performed, and the specifications of the stimulating device are defined. The heartbeat, breathing, and temperature change of parts of the face are observed during the irradiation of the modulated far-infrared rays. The change in the vital data of the human reaction towards the stimulation is < 3.5% and no remarkable characteristics are observed. When three subjects are questioned, a somatic sensation is reported; thus, the possibility of detecting the feeling of presence using other vital data is suggested. Further development of detection techniques using the vital data is planned in order to confirm the effectiveness of the detection of the feeling of presence.