Neural correlates of attentional capture in visual search
Neural correlates of attentional capture in visual search
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DOI：
10.1162/089892904970762
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发表时间：
2004-06-01
影响因子：
3.2
通讯作者：
Lavie, N
中科院分区：
文献类型：
--
作者：
de Fockert, J;Rees, G;Lavie, N
许多行为研究表明，在视觉搜索任务中，如果出现一个独特的单一分心物体，通常会吸引注意力，从而扰乱目标搜索。在这里，我们使用功能性磁共振成像在人类受试者执行视觉搜索任务的过程中检验了这种注意力捕获的神经关联。存在(与不存在)显著但无关的单色分心物与顶上皮质和额叶皮质的活动有关。这些发现表明，正如AC账户所预测的那样，尽管与此无关，但独生子女分心物还是会引起注意力的空间转移。此外，独生子女干扰物的行为干扰与额叶活动呈显著负相关。这些发现提供了直接证据，表明额叶皮质参与了控制来自无关但吸引注意力的干扰的干扰。
Much behavioral research has shown that the presence of a unique singleton distractor during a task of visual search will typically capture attention and thus disrupt target search. Here we examined the neural correlates of such attentional capture using functional magnetic resonance imaging in human subjects during performance of a visual search task. The presence (vs. absence) of a salient yet irrelevant color singleton distractor was associated with activity in the superior parietal cortex and frontal cortex. These findings imply that the singleton distractor induced spatial shifts of attention despite its irrelevance, as predicted from an AC account. Moreover, behavioral interference by singleton distractors was strongly and negatively correlated with frontal activity. These findings provide direct evidence that the frontal cortex is involved in control of interference from irrelevant but attention-capturing distractors.