Evaluation of Psychological Emotions During Fragrance Exposure by Chaotic Analysis of Fingertip Plethysmography

Tomofumi Sakata, Keiichi Watanuki, Keiichi Muramatsu, Kazunori Kaede

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Fragrance influences the psychophysiological state of a person; the volume of fingertip plethysmography is consequently affected by the aspiration of aroma. In this study, stimulation threshold at the time of aroma suction and emotional change around the discrimination threshold were evaluated by analyzing both a questionnaire and fingertip plethysmograph measurement. We built a fragrance generator to confirm the stimulus threshold, discrimination threshold, and acclimatization time of smell. Participants were asked to take a subjective evaluation of aroma intensity, comfortableness (comfort/discomfort), and aroma frequency in real time. The results confirmed the chaotic nature of the time series data of the fingertip plethysmographs. Moreover, the fingertip plethysmographs fluctuated when the participants responded that it did not smell in the subjective evaluation and when the maximum Lyapunov exponent increased, as the aroma fluctuation of the fingertip plethysmographs enlarged, corresponding to the uncomfortable values of the subjective evaluation.

Original languageEnglish
Title of host publicationAdvances in Affective and Pleasurable Design - Proceedings of the AHFE 2019 International Conference on Affective and Pleasurable Design
EditorsShuichi Fukuda
PublisherSpringer Verlag
Pages167-176
Number of pages10
ISBN (Print)9783030204402
DOIs
Publication statusPublished - 2020
Externally publishedYes
EventAHFE International Conference on Affective and Pleasurable Design, 2019 - Washington D.C., United States
Duration: 2019 Jul 242019 Jul 28

Publication series

NameAdvances in Intelligent Systems and Computing
Volume952
ISSN (Print)2194-5357
ISSN (Electronic)2194-5365

Conference

ConferenceAHFE International Conference on Affective and Pleasurable Design, 2019
CountryUnited States
CityWashington D.C.
Period19/7/2419/7/28

Keywords

  • Chaotic analysis
  • Evaluation of psychological emotions
  • Fingertip plethysmographs
  • Fragrance

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Computer Science(all)

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