真人面孔中的返回抑制效应

摘要

Inhibition of return ( IOR) shows a slow response to targets at recently attended locations.To investigate IOR effect of face processing in college students and know their ability of attentional inhibition, a cue-target paradigm and ERPs technology were used to ask subjects to complete location task.At the position of target stimuli, neutral face photographs as targets captured objects'attention.It was found that at the both level of behavior and EEG, IOR effect were remarkable.Compared with cued clues, uncued clues of N1 were smaller and of N170 were greater.The results suggested that IOR effect existed in the initial processing of face, indicating that this effect arised from the early perception changes and supporting the perception inhibition theory.%为探讨真人面孔中的返回抑制效应及其发生过程，采用线索靶子范式和事件相关电位技术，将中性面孔图片作为目标刺激，要求被试完成定位任务。结果在行为层面和脑电层面均出现了显著的返回抑制效应；无效线索相比于有效线索，在N1上波幅更小，在N170上波幅更大。实验结果表明，返回抑制效应存在于对面孔的搜索过程中，提示该效应来源于早期知觉变化。