Contribution of Facial Color to Expression Recognition of Blurred Faces

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  • 顔色が低解像度顔刺激における表情認知に及ぼす影響
  • －瞳孔反応による解析－
  • - Analysis of Pupillary Changes -

Abstract

The change of facial color and expression reflects our mental or physical condition. Previous behavioral studies indicated that there is a strong interaction between facial color and expression perception. This study investigated the contribution of facial color to expression recognition in blur images with the measurement of behavior and pupillary change. In the experiment, the face stimuli of facial colors (natural color, reddish) with different expressions (neutral, and anger) in 3 blur levels were presented. Participants performed a task of expression identification to the stimulus. Behavioral results indicated that the facial color has a significant contribution to expression recognition as blur level increases. Then, the results of pupillometry showed that the reddish-color provided the information necessary to identify anger. These results showed the contribution of facial color increases in both psychophysics and pupillary experiment as blur level increases, which suggested that facial color emphasizes the characteristics of specific facial expression.

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