Chen Juan, Liu Bingyun, Chen Bing, Fang Fang
Department of Psychology and Key Laboratory of Machine Perception, Ministry of Education, Peking University, 5 Yiheyuan Road, Beijing 100871, PR China.
Vision Res. 2009 Mar;49(7):752-8. doi: 10.1016/j.visres.2009.02.005. Epub 2009 Feb 20.
The visual system often automatically perceives partially occluded objects as whole and complete. This phenomenon is called amodal completion, but its mechanism is not fully understood. In the first experiment, we measured the psychophysical time course of face amodal completion using a performance-based method and found the amodal completion took place between 100 and 300 ms after stimulus onset. In the second experiment, we found the amodal completion could modulate event-related potentials (ERPs) in the same time range. These results provide further evidence regarding the representational development of occluded faces from local facial features to a coherent face.
视觉系统常常会自动将部分被遮挡的物体感知为完整的。这种现象被称为非模态完成，但它的机制尚未被完全理解。在第一个实验中，我们使用基于表现的方法测量了面部非模态完成的心理物理学时间进程，发现非模态完成在刺激开始后的100到300毫秒之间发生。在第二个实验中，我们发现非模态完成可以在相同的时间范围内调节事件相关电位（ERP）。这些结果为从局部面部特征到连贯面部的遮挡面部表征发展提供了进一步的证据。
