知觉与表象过程中不同线索表情的启动效应研究

探讨情绪性面孔的知觉和表象过程中,不同类型线索表情的启动效应,并关注不同类型表情表象难易的差异。选取NimStim数据库中20位演员的愉快、愤怒和中性表情作为启动刺激,随后呈现同一演员不同表情的图片,或通过颜色提示被试对不同表情进行表象,并同时进行表情类型判断。研究发现,情绪性面孔知觉与表象任务中均存在启动效应,之前呈现的线索面孔将会对接下来呈现的相同效价的面孔产生启动效应,对相反效价及中性面孔产生抑制; 在平衡不同类型面孔可能存在的启动效应后,正性、负性及中性表情是同样易于表象的。

The Priming Effect of Different Cue Expressions in Perceptual and Imaginary Processes

The priming effect of different emotional expressions during perceptual and imaginary processes,and the differences of mental imagery for different emotional faces were investigated.The happy,angry and neutral expressions of 20 actors were chosen from the NimStim dataset as the priming stimuli.Followed by the priming stimuli,the picture of the same actor(perceptual condition),or a colored frame without a face was shown(imagination condition).Participants were asked to perceive or imagine the corresponding emotion according to the color of the framework,and make a button press to indicate the type of the expressions.The priming effects were found for both emotional face perception and imaginary task.More specifically,the previously presented cue face would produce positive priming for the stimuli with the same valence presented later,and negative effect for the facial expressions with opposite valence or neutral face.After balancing the priming effects of different type of faces,the facial expressions were equally easy to imagine.