Dynamic micro aspects of facial movements in elicited and posedexpressions using high-speed camera

摘要

The presented study investigated the dynamic aspects of facialmovements in spontaneously elicited and posed facial expressions ofemotion. We recorded participants' facial movements when they were showna set of emotional eliciting films, and when they posed typical facialexpressions. Those facial movements were recorded by a high-speed cameraof 250 frames per second. We measured facial movements frame by frame interms of displacements of facial feature points. Such micro-temporalanalysis showed that, although it was very subtle, there exits thecharacteristic onset asynchrony of each part's movement. Furthermore, itwas found the commonality of each part's movement in temporal changealthough the speed and the amount of each movement varied along withexpressional conditions and emotions