Electrophysiological Evidence for the Suppression of Highly Salient Distractors

Electrophysiological Evidence for the Suppression of Highly Salient Distractors
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抑制高度显着干扰因素的电生理学证据

DOI:
10.1162/jocn_a_01827
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发表时间:
2022
影响因子:
3.2
通讯作者:
Gaspelin, Nicholas
Gaspelin, Nicholas
中科院分区:
医学3区
文献类型:
--
作者:
Stilwell, Brad T.;Egeth, Howard;Gaspelin, Nicholas

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关于显著刺激是否具有不自觉地吸引注意力的能力,一直存在着长期的争论。作为解决这一争论的一种可能的方法,信号抑制假说提出,突出项目会产生一个自下而上的信号,自动吸引注意力,但突出项目可以通过自上而下的机制来抑制,以防止注意力捕获。尽管有很多支持,但信号抑制假说受到了挑战,因为许多先前的研究可能使用了显着性相对较低的颜色单子,这些单子太弱而无法引起注意。目前的研究通过使用先前的方法来研究抑制,但增加了集合大小以提高颜色单子的相对显着性来解决这个问题。为了评估显著干扰物是否捕获注意,测量了注意分配(N2pc分量)和抑制(PDcomponent)的电生理标记。结果没有提供注意捕获的证据,而是显示了高度突出的单一干扰物的抑制,正如PDcomponent所指示的那样。即使显著性的计算模型证实了颜色单态是高度显著的,这种抑制也会发生。总之,这支持信号抑制假说,与刺激驱动的注意捕获模型不一致。
There has been a longstanding debate as to whether salient stimuli have the power to involuntarily capture attention. As a potential resolution to this debate, the signal suppression hypothesis proposes that salient items generate a bottom–up signal that automatically attracts attention, but that salient items can be suppressed by top–down mechanisms to prevent attentional capture. Despite much support, the signal suppression hypothesis has been challenged on the grounds that many prior studies may have used color singletons with relatively low salience that are too weak to capture attention. The current study addressed this by using previous methods to study suppression but increased the set size to improve the relative salience of the color singletons. To assess whether salient distractors captured attention, electrophysiological markers of attentional allocation (the N2pc component) and suppression (the PDcomponent) were measured. The results provided no evidence of attentional capture, but instead indicated suppression of the highly salient singleton distractors, as indexed by the PDcomponent. This suppression occurred even though a computational model of saliency confirmed that the color singleton was highly salient. Altogether, this supports the signal suppression hypothesis and is inconsistent with stimulus-driven models of attentional capture.
DOI: 10.1111/psyp.12639
发表时间: 2017-01
期刊: Psychophysiology
影响因子: 3.7
作者:
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期刊: Journal of Experimental Psychology: Human Perception and Performance
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发表时间: 2020-11-25
影响因子: 1.7
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发表时间: 2013-11-26
影响因子: 3.8
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