Chen Zhe, Cave Kyle R
Department of Psychology, University of Canterbury, Private Bag 4800, Christchurch, New Zealand.
Percept Psychophys. 2006 Aug;68(6):992-1003. doi: 10.3758/bf03193360.
Previous studies have shown that interference from flanking distractors can be modulated by the object organization of the scene. The experiments reported here test for object-based attention under conditions of positional certainty, which allow a narrow focus of attention to the target. Prior research has suggested that object-based attention does not arise in these circumstances, but the experiments presented here show that object-based attention can still appear if previous experience with the stimuli leads participants to interpret the stimulus pattern as two separate objects. Two control experiments demonstrate that the appearance of object-based attention is not due simply to a widening of the focus of spatial attention. The presence of object-based attention in such a focused-attention task argues against Shomstein and Yantis's (2002) proposed explanation of object-based attention based on priority in the order of visual search.
先前的研究表明，来自侧翼干扰物的干扰可以通过场景的物体组织进行调节。此处报告的实验在位置确定的条件下测试基于物体的注意，这种条件允许将注意力狭窄地聚焦于目标。先前的研究表明在这些情况下不会产生基于物体的注意，但此处呈现的实验表明，如果参与者对刺激的先前经验使其将刺激模式解释为两个单独的物体，那么基于物体的注意仍然可能出现。两项对照实验表明，基于物体的注意的出现并非仅仅是由于空间注意焦点的拓宽。在这样一个聚焦注意任务中基于物体的注意的存在，与肖姆斯坦和扬蒂斯（2002年）提出的基于视觉搜索顺序中的优先级来解释基于物体的注意的观点相悖。
