Wait, are you sad or angry? Large exposure time differences required for the categorization of facial expressions of emotion.

ABSTRACT: Facial expressions of emotion are essential components of human behavior, yet little is known about the hierarchical organization of their cognitive analysis. We study the minimum exposure time needed to successfully classify the six classical facial expressions of emotion (joy, surprise, sadness, anger, disgust, fear) plus neutral as seen at different image resolutions (240 × 160 to 15 × 10 pixels). Our results suggest a consistent hierarchical analysis of these facial expressions regardless of the resolution of the stimuli. Happiness and surprise can be recognized after very short exposure times (10-20 ms), even at low resolutions. Fear and anger are recognized the slowest (100-250 ms), even in high-resolution images, suggesting a later computation. Sadness and disgust are recognized in

SUBMITTER: Du S 

PROVIDER: S-EPMC3604912 | biostudies-literature | 2013 Mar

REPOSITORIES: biostudies-literature