Journal
PSYCHIATRY RESEARCH
Volume 251, Issue -, Pages 192-196Publisher
ELSEVIER IRELAND LTD
DOI: 10.1016/j.psychres.2017.02.025
Keywords
Emotion; Visual stimulation; R-R interval; Self-Assessment Manikin; Correlation
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Funding
- Korea Institute of Oriental Medicine [K16813, K17070]
- National Research Council of Science & Technology (NST), Republic of Korea [K17070] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Because human emotion varies greatly among individuals and is a qualitative factor, measuring it with any degree of accuracy is very difficult. Heart rate variability (HRV), which is used in evaluations of the autonomic nervous system (ANS), is used to evaluate human emotions. This study examines the validity of HRV as a tool to evaluate emotions using the International Affective Picture System (TAPS). For experimentation, five photos were selected for each of the categories of happy, unhappy, and neutral from among the images provided by the LAPS. The subjects were required to complete the Self-Assessment Manikin (SAM) after being shown each picture. We extracted the R-R interval (RRI) value of each photo from the PPG, as well as the valence, arousal, and dominance value of each photo from the SAM to analyze their correlation. As results, there was significant positive correlation with valence and significant negative correlation with dominance in the photo simulation associated with the unhappy emotion, only when the arousal value exceeded a critical value. Therefore, the findings of this study suggest that it is possible to use an HRV-based evaluation only when a high level of emotion is induced by visual stimulation.
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