英语专八答案|专八考试答案|专八考中答案|专八考前答案

What are the possible links between facial expressions and emotion? One link is arousal, which is the level of activity or preparedness for activity in an organism. Intense contraction of facial muscles,such as those used in signifying fear, heightens arousal. Self-perception of heightened arousal then leads to heightened emotional activity. Other links may involve changes in brain temperature and the release of neurotransmitters (substances that transmit nerve impulses.) The contraction of facial muscles both influences the internal emotional state and reflects it. Ekman has found that theso-called Duchenne smile, 英语专八答案 which is characterized by “crow’s feet” wrinkles around the eyes and asubtle drop in the eye cover fold so that the skin above the eye moves down slightly toward theeyeball, can lead to pleasant feelings.