Can we attend to large and small at the same time?
Can we attend to large and small at the same time?
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我们可以同时处理大事和小事吗？
DOI：
10.1016/0042-6989(93)90234-n
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发表时间：
1993
期刊：
影响因子：
1.8
通讯作者：
Pelli,DG
中科院分区：
文献类型：
--
作者：
Farell,B;Pelli,DG
来自几个来源的证据表明，视觉注意力与刺激规模有关。当观察者必须一次注意多个标度时，这种调优会影响性能。在最初设计用来测量注意力对刺激尺度的带宽的实验中，我们发现观察者在任务中没有表现出注意对尺度的调节。在单独的块中，观察者在元素数组中定位或识别目标，这些元素可以是字母数组中的数字，也可以是闪烁方块数组中的静态正方形。每个显示器包含两个相同比例或不同比例的阵列。在混合比例显示中定位目标元素的精度低于在单比例显示中的精度，但识别目标的精度不受同一显示中的混合比例的影响。无论是高级别的辨别--数字对字母--还是低级别的辨别--静态与闪烁--都是如此。因此，至少为了识别，一个人可以同时关注大的和小的。“什么”和“哪里”之间的带宽差异意味着刺激识别不依赖于先前的局部化。
Evidence from several sources suggests that visual attention is tuned to stimulus scale. This tuning impairs performance when the observer must attend to more than one scale at a time. In experiments originally designed to measure the bandwidth of attention to stimulus scale, we have found tasks in which observers show no attentional tuning for scale. In separate blocks, observers located or identified targets in arrays of elements, either numbers in arrays of letters or static squares in arrays of flashing squares. Each display contained two arrays, either of the same scale or of different scales. The accuracy oflocatingthe target element was lower in mixed-scale than in single-scale displays, but the accuracy ofidentifyingthe target was unaffected by a mixing of scales within the same display. This holds for both high-level discriminations—numbers vs letters—and low-level discriminations—static vs flashing. Thus, at least for identifying, one can attend to large and small at the same time. The difference in bandwidth between “what” and “where” implies that stimulus identification is not dependent on prior localization.