Analysis of Neutral Facial Expression in Terms of Emotional Space and Boundary Points Using Photographic-Quality Stimuli

Mayu MIYAWAKI  Keiko SATO  Masaomi ODA  

D - Abstracts of IEICE TRANSACTIONS on Information and Systems (Japanese Edition)   Vol.J101-D   No.2   pp.330-337
Publication Date: 2018/02/01
Online ISSN: 1881-0225
Type of Manuscript: Special Section PAPER (Special Section on Human Communication)
neutral face,  six pure facial expressions,  affective value,  morphing,  

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This paper aimed to explore the affective meaning and boundary points for the neutral face comparing to the six pure expressions. Experiment 1 measured categorization for the facial stimuli and their affective meanings using the emotional space consisting of pleasantness and activity. Experiment 2 measured the boundary points between neutral and the each pure expression face using the stimuli falling along expression continua. Our data showed that the neutral face tended to be perceived as disgust and had slight unpleasantness and inactivity. Additionally, the neutral face was widely perceived toward disgust, while narrowly perceived toward sadness and surprise.