Investigation of bio-responses to pleasant stimuli for different sensory modalities

• Published in: Transactions of Japanese Society for Medical and Biological Engineering Vol. Annual59; no. Abstract; p. 422
• Main Authors: Yamashita, Masaji, Ito, Yoshitaka, Aikawa, Takeshi, Yokoyama, Toru, Kitama, Masataka
• Format: Journal Article
• Language: Japanese
• Published: Japanese Society for Medical and Biological Engineering 2021
• ISSN: 1347-443X; 1881-4379
• DOI: 10.11239/jsmbe.Annual59.422

To investigate bio-responses to pleasant stimuli, we conducted an experiment involving gustatory, olfactory, and auditory stimuli. We measured the responses of 15 test subjects, who gave informed consent to participate. The subjects tasted a piece of chocolate, smelled the aroma of "orange sweet," and listened to "koi" for gauging the gustatory, olfactory, and auditory stimuli, respectively. A sitting subject rested for 90 s before being exposed to stimuli for 90 s, after which he rested for 40 s. We continuously monitored the blood pressure, electrocardiogram, respiratory wave, and photoplethysmogram for each test subject. In the results, blood pressure increased for auditory stimuli. Likewise, heart rate and respiratory depth increased for gustatory stimuli. We analyzed the combined parameter at a specific part of the pulse wave and observed an increase against control for every stimulus.