Presentation 2010-05-13
Optimal frequency band for the estimation of emotional state based on the frequency analysis of pupil diameter variability using Wavelet Transformation
Kiyomi SAKAMOTO, Shoichi AOYAMA, Shigeo ASAHARA, Hiroshi MIYAUCHI, Hirohiko KANEKO,
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Abstract(in English) We carried out two experiments to specify optimal frequency band for the estimation of emotional state based on the wavelet frequency transformation analysis of pupil diameter variability. The workload required to the subjects was to categorize words presented auditorily. The load of the task was manipulated by the time interval of the stimulus presentation in Experiment 1 (time-based task) or by the number of category in Experiment 2 (cognitive-based task). Pupil diameter was monitored and recorded using an infrared video camera while observers were performing the tasks. In both experiments, the emotional state was significantly correlated with the frequency characteristic of pupil diameter variability and that of heart rate variability although the frequencies (LF/HF) correlated with the emotional state in each experiment were different from each other. Our results indicate the frequency characteristic of pupil diameter variability is useful as an index for evaluating real-time mental stress, and the optimum frequency of it depends on the kind of task.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Pupil diameter variability / Heart rate variability / Mental state / Workload stress / Wavelet transformation
Paper # HCS2010-9,HIP2010-9
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Committee HCS
Conference Date 2010/5/6(1days)
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Registration To Human Communication Science (HCS)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Optimal frequency band for the estimation of emotional state based on the frequency analysis of pupil diameter variability using Wavelet Transformation
Sub Title (in English)
Keyword(1) Pupil diameter variability
Keyword(2) Heart rate variability
Keyword(3) Mental state
Keyword(4) Workload stress
Keyword(5) Wavelet transformation
1st Author's Name Kiyomi SAKAMOTO
1st Author's Affiliation Corporate R&D Strategy Office, Panasonic Corporation()
2nd Author's Name Shoichi AOYAMA
2nd Author's Affiliation Corporate R&D Strategy Office, Panasonic Corporation
3rd Author's Name Shigeo ASAHARA
3rd Author's Affiliation Corporate R&D Strategy Office, Panasonic Corporation
4th Author's Name Hiroshi MIYAUCHI
4th Author's Affiliation Department of Information Processing, Tokyo Institute of Technology
5th Author's Name Hirohiko KANEKO
5th Author's Affiliation Department of Information Processing, Tokyo Institute of Technology
Date 2010-05-13
Paper # HCS2010-9,HIP2010-9
Volume (vol) vol.110
Number (no) 33
Page pp.pp.-
#Pages 7
Date of Issue