Evidence for split attentional foci
Evidence for split attentional foci
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DOI：
10.1037/0096-1523.26.2.834
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发表时间：
2000-04-01
影响因子：
2.1
通讯作者：
Pashler, H
中科院分区：
文献类型：
--
作者：
Awh, E;Pashler, H
部分报告程序被用来测试的能力，观察员分散注意力的非连续位置。观察者报告了出现在5x5刺激阵列内的2个目标的身份，并且线索（有效性= 80%）告知他们2个最可能的目标位置。在无效试验中，1个目标直接出现在提示位置之间。实验1，1a，和2显示了较强的准确性优势，在线索的位置相比，干预。当线索水平排列而不是垂直排列时，这种效果更大。实验3表明，这种效果的线索方向反映了优势的加工目标，出现在不同的hemifields。实验4和4a表明，支持灵活部署的空间注意力的主要机制是抑制干扰的刺激在无人值守的位置。
A partial report procedure was used to test the ability of observers to split attention over noncontiguous locations. Observers reported the identity of 2 targets that appeared within a 5 x 5 stimulus array, and cues (validity = 80%) informed them of the 2 most likely target locations. On invalid trials, 1 of the targets appeared directly in between the cued locations. Experiments 1, 1a, and 2 showed a strong accuracy advantage at cued locations compared with intervening ones. This effect was larger when the cues were arranged horizontally rather than vertically. Experiment 3 suggests that this effect of cue orientation reflects an advantage for processing targets that appear in different hemifields. Experiments 4 and 4a suggest that the primary mechanism supporting the flexible deployment of spatial attention is the suppression of interference from stimuli at unattended locations.