Perceived emotional expressions of composite faces

PloS One
Markku Kilpeläinen, Viljami Salmela

Abstract

The eye and mouth regions serve as the primary sources of facial information regarding an individual's emotional state. The aim of this study was to provide a comprehensive assessment of the relative importance of those two information sources in the identification of different emotions. The stimuli were composite facial images, in which different expressions (Neutral, Anger, Disgust, Fear, Happiness, Contempt, and Surprise) were presented in the eyes and the mouth. Participants (21 women, 11 men, mean age 25 years) rated the expressions of 7 congruent and 42 incongruent composite faces by clicking on a point within the valence-arousal emotion space. Eye movements were also monitored. With most incongruent composite images, the perceived emotion corresponded to the expression of either the eye region or the mouth region or an average of those. The happy expression was different. Happy eyes often shifted the perceived emotion towards a slightly negative point in the valence-arousal space, not towards the location associated with a congruent happy expression. The eye-tracking data revealed significant effects of congruency, expressions and interaction on total dwell time. Our data indicate that whether a face that combines featur...Continue Reading

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Methods Mentioned

BETA
MDS

Software Mentioned

Eyelink Matlab
MANOVA
Matlab
R
Psychophysics Toolbox

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