Toward the influence of temporal attention on the selection of targets in a visual search task: An ERP study.
Toward the influence of temporal attention on the selection of targets in a visual search task: An ERP study.
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DOI：
10.1111/psyp.12734
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发表时间：
2016-08
期刊：
影响因子：
3.7
通讯作者：
B. Rolke;Freya Festl;Verena C. Seibold
中科院分区：
文献类型：
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作者：
B. Rolke;Freya Festl;Verena C. Seibold
我们使用事件相关电位来研究时间注意是否与空间注意和基于特征的注意相互作用以增强视觉加工。我们提出了一种视觉搜索显示，其中包含一组同质干扰物中的一个单独的刺激。参与者被要求只对特定颜色和形状的目标单身个体做出反应，这些个体呈现在一个有人值守的空间位置上。我们通过在每个搜索显示之前呈现一个警告信号，并以阻塞的方式改变警告信号和搜索显示之间的前时段(FP)来操纵时间注意。我们观察到空间和时间注意的不同的事件相关电位效应。空间注意增强了N2PC、SPCN和P3的波幅，表明注意侧相关刺激特征的加工受益。时间注意加速了刺激的处理；这是通过N2PC成分的更早开始和对目标的反应时间的减少来指示的。最重要的是，时间注意不会与空间注意或刺激特征相互作用，从而影响视觉加工。综上所述，这些结果表明，时间注意促进了视觉搜索任务中独立于空间注意和基于特征的注意的视觉知觉加工，这为时间注意的非特异性增强假说提供了支持。
We used ERPs to investigate whether temporal attention interacts with spatial attention and feature-based attention to enhance visual processing. We presented a visual search display containing one singleton stimulus among a set of homogenous distractors. Participants were asked to respond only to target singletons of a particular color and shape that were presented in an attended spatial position. We manipulated temporal attention by presenting a warning signal before each search display and varying the foreperiod (FP) between the warning signal and the search display in a blocked manner. We observed distinctive ERP effects of both spatial and temporal attention. The amplitudes for the N2pc, SPCN, and P3 were enhanced by spatial attention indicating a processing benefit of relevant stimulus features at the attended side. Temporal attention accelerated stimulus processing; this was indexed by an earlier onset of the N2pc component and a reduction in reaction times to targets. Most importantly, temporal attention did not interact with spatial attention or stimulus features to influence visual processing. Taken together, the results suggest that temporal attention fosters visual perceptual processing in a visual search task independently from spatial attention and feature-based attention; this provides support for the nonspecific enhancement hypothesis of temporal attention.