情绪面部表情是指通过眼部肌肉、颜面肌肉和口部肌肉的变化来表现各种情绪状态（彭聃龄，2004），是情绪的外在表现。
Emotional facial expressions are the external performance of emotion , through the changes of eye muscles , facial muscles and mouth muscles to express emotional states ( Danling Peng , 2004 ) .
彭聃龄