Response selection modulates visual search within and across dimensions
Response selection modulates visual search within and across dimensions
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DOI：
10.1037/0096-1523.31.3.542
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发表时间：
2005-06-01
影响因子：
2.1
通讯作者：
Starreveld, P
中科院分区：
文献类型：
--
作者：
Mortier, K;Theeuwes, J;Starreveld, P
在特征搜索任务中，相对于提前已知该维度的情况，目标与非目标不同的维度的不确定性会阻碍搜索性能。通常，这些跨维度成本与对目标的注意力引导效率较低相关。在本研究中，参与者要么必须执行特征搜索任务，要么必须执行非搜索任务，即对没有非目标的目标做出响应。目标在一维或跨维度上有所不同。结果在搜索和非搜索条件下显示出类似的效果：预先了解目标维度比维度未知时的响应时间更短。使用逐次试验提示也发现了类似的结果。结论是，通常归因于早期自上而下的注意力引导调节的效果可能代表了稍后在处理过程中发生的效果。
In feature search tasks, uncertainty about the dimension on which targets differ from the nontargets hampers search performance relative to a situation in which this dimension is known in advance. Typically, these cross-dimensional costs are associated with less efficient guidance of attention to the target. In the present study, participants either had to perform a feature search task or had to perform a nonsearch task, that is, respond to a target presented without nontargets. The target varied either in one dimension or across dimensions. The results showed similar effects both in search and nonsearch conditions: Preknowledge of the target dimension gave shorter response times than when the dimension was unknown. Similar results were found using a trial-by-trial cueing. It is concluded that effects that typically have been attributed to early top-down modulation of attentional guidance may represent effects that occur later in processing.