Chaotic analysis of finger plethysmograms for evaluation emotion induced by exposure to fragrance

Tomofumi Sakata, Keiichi Watanuki, Keiichi Muramatsu, Kazunori Kaede

研究成果: Conference contribution

抄録

Fragrance influences the psychophysiological state of a person; the volume of fingertip plethysmography is consequently affected by the aspiration of aroma. Further, it may be uncomfortable depending on the amount of odor that you inhales. In this study, to observe changes in emotions during aroma aspiration, the flow of scent was continuously directed into the nose of participants quantitatively and directly. Subsequently, the stimulation threshold during aroma inhalation and change in emotions were evaluated through a questionnaire and fingertip plethysmography. We developed a fragrance generator to ensure quantitative aroma flow and participants were asked to subjectively evaluate aroma intensity and the level of comfort in real time.The results confirmed the chaotic nature of the time series data of fingertip plethysmographs. Moreover, it was confirmed that the Largest Lyapunov Exponent (LLE), which provides an indication of the amount of fluctuation, corresponds to the subjective evaluation of comfort/discomfort. The value of the index decreases during pleasure and increases during discomfort. In other words, it was confirmed that the pulse wave fluctuated when the participants were experiencing discomfort.

本文言語English
ホスト出版物のタイトル2019 IEEE International Conference on Systems, Man and Cybernetics, SMC 2019
出版社Institute of Electrical and Electronics Engineers Inc.
ページ1125-1129
ページ数5
ISBN(電子版)9781728145693
DOI
出版ステータスPublished - 2019 10
外部発表はい
イベント2019 IEEE International Conference on Systems, Man and Cybernetics, SMC 2019 - Bari, Italy
継続期間: 2019 10 62019 10 9

出版物シリーズ

名前Conference Proceedings - IEEE International Conference on Systems, Man and Cybernetics
2019-October
ISSN(印刷版)1062-922X

Conference

Conference2019 IEEE International Conference on Systems, Man and Cybernetics, SMC 2019
国/地域Italy
CityBari
Period19/10/619/10/9

ASJC Scopus subject areas

  • 電子工学および電気工学
  • 制御およびシステム工学
  • 人間とコンピュータの相互作用

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