Top-down control over biased competition during covert spatial orienting
Top-down control over biased competition during covert spatial orienting
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DOI：
10.1037/0096-1523.29.1.52
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发表时间：
2003-02-01
影响因子：
2.1
通讯作者：
Serences, JT
中科院分区：
文献类型：
--
作者：
Awh, E;Matsukura, M;Serences, JT
当干扰物干扰普遍存在时，观察到空间注意的更大益处，支持空间选择通过抑制干扰物干扰来促进视觉处理的观点。目前的工作表明，提示效果与相同的视觉显示可以大幅增长的干扰物干扰的概率增加。在没有干扰物的情况下，干扰的概率对空间线索效应没有影响，这表明放大的线索效应不是由信号增强或注意力空间分布的变化引起的。这些研究结果表明，注意力控制设置决定更多的空间注意力的方向;自上而下的设置也影响注意力如何影响视觉处理，当干扰物干扰可能时，干扰物排除水平增加。
Larger benefits of spatial attention are observed when distractor interference is prevalent, supporting the view that spatial selection facilitates visual processing by suppressing distractor interference. The present work shows that cuing effects with identical visual displays can grow substantially as the probability of distractor interference increases. The probability of interference had no impact on spatial cuing effects in the absence of distractors, suggesting that the enlarged cuing effects were not caused by changes in signal enhancement or in the spatial distribution of attention. These findings suggest that attentional control settings determine more than where spatial attention is directed; top-down settings also influence how attention affects visual processing, with increased levels of distractor exclusion when distractor interference is likely.