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采用辨别任务探讨了正立与倒立的中性面孔线索对返回抑制的影响。实验一采用同时线索化范式考察了正立与倒立面孔线索对靶刺激反应的影响,结果发现,两种面孔线索对随后靶刺激的反应没有影响。实验二采用单线索范式考察正立与倒立面孔对返回抑制的影响,结果发现,两种线索条件下均产生了返回抑制,而且返回抑制量没有显著差异。实验三,正立与倒立面孔作为靶刺激呈现,得到与实验二相同的结果。这些结果表明当采用中性面孔为线索时,返回抑制的产生并不受线索与靶刺激显著性的影响,而且返回抑制这种“盲目”机制不受任务难度的影响。
The discrimination task was used to investigate the effect of orthostatic and inverted neutral face cues on return inhibition. In experiment one, the effects of orthographic and inverted cortical cues on the target stimulus responses were examined using a simultaneous clues normalization model. The results showed that the two cortical clues had no effect on the subsequent target stimuli. In experiment two, the effect of orthostatic and inverted faces on the inhibition of return was investigated using the single-clump paradigm. It was found that there was no return difference between the two clues. Experiment 3, the erection and inverted face as a target stimulus, get the same result as experiment two. These results show that when using neutral face as a clue, the generation of return inhibition is not affected by the saliency of cues and target stimuli, and the return inhibition of this “blind” mechanism is not affected by the task difficulty.