Lateral interactions between targets and flankers in low-level vision depend on attention to the flankers
Lateral interactions between targets and flankers in low-level vision depend on attention to the flankers
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DOI：
10.1038/nn728
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发表时间：
2001-10-01
影响因子：
25
通讯作者：
Driver, J
中科院分区：
文献类型：
--
作者：
Freeman, E;Sagi, D;Driver, J
共线视觉侧翼可以促进定向视觉目标的检测。这种横向相互作用被认为反映了低水平视觉的整合过程。在过去的研究中，侧翼部队与任务无关，通常被认为是无人值守的。在这里，我们直接操纵对侧翼的注意力，要求观察者判断两个侧翼的相对排列，同时忽略第二个侧翼对。在相同的刺激条件下，有人参与的侧翼产生了典型的横向相互作用，但被忽视的侧翼却没有。这些数据表明，横向相互作用可能取决于对侧翼环境的注意力，揭示了低水平视觉中注意力调节的功能后果。
Detection of an oriented visual target can be facilitated by collinear visual flankers. Such lateral interactions are thought to reflect integrative processes in low-level vision. In past studies, the flankers were task-irrelevant, and were typically assumed to be unattended. Here we manipulated attention to the flankers directly, by requiring observers to judge the relative alignment of two flankers while ignoring a second flanker-pair. Under identical stimulus conditions, attended flankers produced typical lateral interactions, but ignored flankers did not. These data show that lateral interactions can depend on attention to the flanking context, revealing the functional consequences of attentional modulation in low-level vision.