Department of Psychological Sciences, Birkbeck College, University of London, UK.
Psychophysiology. 2011 Oct;48(10):1426-33. doi: 10.1111/j.1469-8986.2011.01207.x. Epub 2011 Apr 19.
We investigated whether the absence of one item in a regularly spaced visual array (gap cue) captures attention in a task-set-independent fashion. Participants searched for a large target among medium-size distractors (size task) or a red target among gray distractors (color task). Target arrays were preceded by uninformative cue arrays that contained a color singleton or a gap cue. The N2pc component was measured as an index of attentional capture. Color singleton cues captured attention only in the color task, but gap cues captured attention in both tasks. For cue arrays containing a color singleton and a gap cue on opposite sides, an N2pc was triggered by the color singleton in the color task. The absence of an item in a regular array triggered task-set-independent attentional capture when it was the only unique display feature, but not when a competing set-matching singleton was simultaneously present.
我们研究了在规则间隔的视觉阵列中缺少一个项目（缺口线索）是否以任务集独立的方式吸引注意力。参与者在中等大小的干扰物中寻找大目标（大小任务）或在灰色干扰物中寻找红色目标（颜色任务）。目标数组之前是没有信息的线索数组，其中包含一个颜色单峰或缺口线索。N2pc 成分被用作注意力捕获的指标。颜色单峰线索仅在颜色任务中吸引注意力，但缺口线索在两个任务中都吸引注意力。对于包含颜色单峰和缺口线索在相对两侧的线索数组，在颜色任务中，N2pc 被颜色单峰触发。当规则数组中缺少一个项目是唯一的独特显示特征时，它会触发任务集独立的注意力捕获，但当同时存在竞争的集合匹配单峰时则不会。
