How many locations can be selected at once?
How many locations can be selected at once?
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DOI：
10.1037/0096-1523.33.5.1003
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发表时间：
2007-10-01
影响因子：
2.1
通讯作者：
Enns, James T.
中科院分区：
文献类型：
--
作者：
Franconeri, Steven L.;Alvarez, George A.;Enns, James T.
视觉系统使用多种工具来仅选择最相关的视觉信息以进行进一步处理，包括按位置进行选择。在本研究中，作者探索了一次可以选择多少个位置。尽管过去来自多个视觉任务的证据表明视觉系统可以同时对固定数量的 4 个物体或位置进行操作，但作者发现，这种能力根据任务所需的选择精度而有很大差异。当作者需要精确选择区域时，只能选择2-3个位置。但是当选择区域可以更粗时，最多可以选择6-7个位置。作者讨论了选择多个位置的潜在机制，并回顾了视觉注意力固定限制的证据。
The visual system uses several tools to select only the most relevant visual information for further processing, including selection by location. In the present study, the authors explored how many locations can be selected at once. Although past evidence from several visual tasks suggests that the visual system can operate on a fixed number of 4 objects or locations at once, the authors found that this capacity varies widely in response to the precision of selection required by the task. When the authors required precise selection regions, only 2-3 locations could be selected. But when the selection regions could be coarser, up to 6-7 locations could be selected. The authors discuss potential mechanisms underlying the selection of multiple locations and review the evidence for fixed limits in visual attention.