Department of Psychology, State University of New York at Binghamton.
J Exp Psychol Hum Percept Perform. 2021 Oct;47(10):1313-1328. doi: 10.1037/xhp0000948.
A longstanding debate in visual attention research has been whether physically salient objects have an automatic power to capture attention. Recent evidence has supported a hybrid model. According to the signal suppression hypothesis, salient items automatically attract attention but can be proactively suppressed via top-down control to prevent attentional capture. Although much recent evidence has suggested that salient items can be suppressed, many of these studies used color singletons with relatively low salience. It is therefore unknown whether highly salient color singletons can also be suppressed. The current study adapted the probe technique to assess capture by color singletons at large set sizes (10 or 30 items). In four experiments, we observed no evidence that highly salient color singletons captured attention and instead observed evidence that they were suppressed below baseline levels of processing. We did, however, find strong evidence of floor effects in probe report at high set sizes, which can be mitigated by limiting the number of items that are simultaneously probed. Altogether, the results support the signal suppression hypothesis. (PsycInfo Database Record (c) 2021 APA, all rights reserved).
在视觉注意力研究中，一个长期存在的争论是，物理上显著的物体是否具有自动吸引注意力的能力。最近的证据支持了一种混合模型。根据信号抑制假说，显著的项目会自动吸引注意力，但可以通过自上而下的控制主动抑制，以防止注意力捕获。尽管最近有很多证据表明显著的项目可以被抑制，但这些研究中的许多都是使用相对低显著度的颜色单一体进行的。因此，尚不清楚高度显著的颜色单一体是否也可以被抑制。本研究采用探针技术，在较大的集合大小（10 或 30 个项目）下评估颜色单一体的捕获情况。在四项实验中，我们没有发现高度显著的颜色单一体吸引注意力的证据，而是发现了它们被抑制在低于基线处理水平的证据。然而，我们确实在高集合大小的探针报告中发现了强烈的地板效应的证据，通过限制同时被探测的项目数量可以减轻这种效应。总的来说，这些结果支持了信号抑制假说。（PsycInfo 数据库记录（c）2021 APA，保留所有权利）。
