Goal-driven attentional capture by invisible colors: evidence from event-related potentials.
Goal-driven attentional capture by invisible colors: evidence from event-related potentials.
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DOI：
10.3758/pbr.16.4.648
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发表时间：
2009-08
影响因子：
3.5
通讯作者：
Eimer M
中科院分区：
文献类型：
--
作者：
Ansorge U;Kiss M;Eimer M
我们结合事件相关脑电位（ERP）和行为的措施，以测试是否阈下视觉刺激可以捕获注意力的目标依赖的方式。参与者寻找由特定颜色定义的视觉目标。搜索显示器充当包含目标颜色中的一个线索的先前线索显示器的元对比掩码。虽然这个目标颜色线索是空间无信息，它产生的行为空间线索效应，并触发了ERP相关的注意力选择（N2PC组件）。这些结果表明，目标颜色线索捕获注意，尽管事实上，线索本地化性能评估在单独的块是在机会水平。我们的结论是，任务设定的偶然注意力捕获并不局限于阈上刺激，也可以由非有意识感知的视觉事件引起。
We combined event-related brain potentials (ERPs) and behavioural measures to test whether subliminal visual stimuli can capture attention in a goal-dependent manner. Participants searched for visual targets defined by a specific colour. Search displays served as metacontrast masks for preceding cue displays that contained one cue in the target colour. Although this target-colour cue was spatially uninformative, it produced behavioural spatial cueing effects, and triggered an ERP correlate of attentional selection (the N2pc component). These results demonstrate that target-colour cues captured attention, in spite of the fact that cue localization performance assessed in separate blocks was at chance level. We conclude that task-set contingent attentional capture is not restricted to supraliminal stimuli, but is also elicited by visual events that are not consciously perceived.