Attentional control settings prevent abrupt onsets from capturing visual spatial attention
Attentional control settings prevent abrupt onsets from capturing visual spatial attention
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DOI：
10.1080/17470210903150738
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发表时间：
2010-01-01
影响因子：
1.7
通讯作者：
Pratt, Jay
中科院分区：
文献类型：
--
作者：
Al-Aidroos, Naseem;Harrison, Stephenie;Pratt, Jay
在目标检测任务中，当视觉干扰物出现在视觉目标之前时，如果干扰物出现在与目标相同的位置，则响应时间更快。在目标检测任务中，当视觉干扰物与视觉目标同时出现时，响应时间相对于没有干扰物时减慢。这两种效应都被视为视觉空间注意力捕获的证据，但早期干扰物的捕获取决于自上而下的注意力控制设置（ACS），而并发干扰物的捕获则不然。本研究评估了这种不一致性是否归因于干扰物的时间（早于与目标同时），或所采用的比较（相同位置/不同位置与干扰物/无干扰物）。使用一个任务，提出了早期和并发干扰，我们观察到，无论时间，捕获是偶然的ACS时，评估相同的位置/不同的位置比较。这一结果表明，虽然不相关的刺激引起非空间纯刺激驱动的影响，捕获视觉空间注意是偶然的ACS。
When a visual distractor appears earlier than a visual target in a target-detection task, response time is faster if the distractor appears at the same location as the target. When a visual distractor appears concurrently with a visual target in a target-detection task, response time is slowed relative to when no distractor is presented. Both effects have been taken as evidence of the capture of visual spatial attention, yet capture by early distractors is contingent on top-down attentional control settings (ACSs), and capture by concurrent distractors is not. The present study evaluated whether this incongruity is attributable to the timing of distractors (earlier than vs. concurrently with the target), or to the employed comparisons (same location/different location vs. distractor/no distractor). Using a task that presented both early and concurrent distractors, we observed that, regardless of timing, capture was contingent on ACSs when assessed by the same-location/different-location comparison. This result suggests that, although irrelevant stimuli cause nonspatial purely stimulus-driven effects, the capture of visual spatial attention is contingent on ACSs.