The guidance of spatial attention during visual search for color combinations and color configurations.
The guidance of spatial attention during visual search for color combinations and color configurations.
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DOI：
10.1037/xhp0000225
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发表时间：
2016-03
期刊：
影响因子：
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通讯作者：
N. Berggren;M. Eimer
中科院分区：
文献类型：
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作者：
N. Berggren;M. Eimer
目标定义特征的表示（注意模板）在视觉搜索中指导目标对象的选择。我们使用行为学和电生理学方法来研究这些搜索模板如何控制搜索任务中的注意力分配，其中目标是通过两种颜色的组合或这些颜色的特定空间配置来定义的。目标显示之前是空间上无信息的提示显示，其中包含1种或两种目标定义颜色的项目。实验1和实验2表明，在搜索颜色组合的过程中，注意力最初是独立地、并行地分配到所有与目标颜色匹配的物体上，然后迅速从只有两种目标颜色中的一种的物体上撤出。在实验3中，目标被定义为特定的2种颜色的空间构型，并且可以伴随着具有相同颜色的不同构型的非目标物体。注意引导过程无法区分这两种类型的物体。当它们出现在提示显示中时，它们吸引的注意力是一样的，当它们出现在相同的目标显示中时，它们都接受平行的焦点-注意力处理，并被编码到工作记忆中。结果表明，同一维度的多个特征可以同时引导注意力，但这些引导过程无法获得目标物体的空间结构属性。他们认为注意力模板并不是以一种综合的图形方式来表示目标对象，而是包含目标定义特征的单独表示。(PsycINFO数据库记录
Representations of target-defining features (attentional templates) guide the selection of target objects in visual search. We used behavioral and electrophysiological measures to investigate how such search templates control the allocation of attention in search tasks where targets are defined by the combination of 2 colors or by a specific spatial configuration of these colors. Target displays were preceded by spatially uninformative cue displays that contained items in 1 or both target-defining colors. Experiments 1 and 2 demonstrated that, during search for color combinations, attention is initially allocated independently and in parallel to all objects with target-matching colors, but is then rapidly withdrawn from objects that only have 1 of the 2 target colors. In Experiment 3, targets were defined by a particular spatial configuration of 2 colors, and could be accompanied by nontarget objects with a different configuration of the same colors. Attentional guidance processes were unable to distinguish between these 2 types of objects. Both attracted attention equally when they appeared in a cue display, and both received parallel focal-attentional processing and were encoded into working memory when they were presented in the same target display. Results demonstrate that attention can be guided simultaneously by multiple features from the same dimension, but that these guidance processes have no access to the spatial-configural properties of target objects. They suggest that attentional templates do not represent target objects in an integrated pictorial fashion, but contain separate representations of target-defining features. (PsycINFO Database Record