视觉表象在视觉搜索过程中影响注意导向：行为学和电生理学证据。
Visual imagery influences attentional guidance during visual search: Behavioral and electrophysiological evidence.
作者信息
Cochrane Brett A, Townsend Ben, Lee Ryan C, Legere Joey K, Milliken Bruce, Shedden Judith M
机构信息
Department of Psychology, Neuroscience and Behaviour, McMaster University, Hamilton, Ontario, Canada.
Department of Psychology, University of Toronto, Sidney Smith Hall, 100 St. George Street, Toronto, Ontario, M5S 3G3, Canada.
出版信息
Atten Percept Psychophys. 2021 Jan;83(1):58-66. doi: 10.3758/s13414-020-02208-7. Epub 2020 Nov 30.
Recent behavioral studies have shown that color imagery can benefit visual search when it is congruent with an upcoming target. In the present study we investigated whether this color imagery benefit was due to the processes underlying attentional guidance, as indicated by the electrophysiological marker known as the N2pc component. Participants were instructed to imagine a color prior to each trial of a singleton search task. On some trials, the imagined color was congruent with the target, and on other trials, it was congruent with the distractors. The analyses revealed that the N2pc was present when color imagery was congruent with the search target, and absent when it was congruent with the distractors. Further, there was preliminary evidence that attentional guidance depended on the vividness of color imagery and the frequency at which participants implemented the imagery instruction. Overall, the results of the present study indicate that color imagery can influence the attentional guidance processes underlying visual search.
最近的行为研究表明，当颜色意象与即将出现的目标一致时，它可以有益于视觉搜索。在本研究中，我们调查了这种颜色意象益处是否归因于注意力引导的潜在过程，这由被称为N2pc成分的电生理指标所表明。参与者被指示在单一搜索任务的每次试验之前想象一种颜色。在一些试验中，想象的颜色与目标一致，而在其他试验中，它与干扰物一致。分析显示，当颜色意象与搜索目标一致时会出现N2pc，而当它与干扰物一致时则不存在。此外，有初步证据表明注意力引导取决于颜色意象的生动程度以及参与者执行意象指令的频率。总体而言，本研究结果表明颜色意象可以影响视觉搜索背后的注意力引导过程。
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