Expectancies modulate attentional capture by salient color singletons
Expectancies modulate attentional capture by salient color singletons
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DOI：
10.1016/j.visres.2008.02.006
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发表时间：
2008-05-01
期刊：
影响因子：
1.8
通讯作者：
Krummenacher, Joseph
中科院分区：
文献类型：
--
作者：
Geyer, Thomas;Muller, Hermann J.;Krummenacher, Joseph
在针对形状定义目标的单例特征搜索中，已知与任务无关但显着的单例颜色干扰项的呈现会干扰目标检测[Theeuwes，J.（1991）.跨维度感知选择性。Perception & Psychophysics，50，184 - 193; Theeuwes，J.（1992）.对颜色和形式的感知选择性。Perception & Psychophysics，51，599 - 606].本研究的目的是重新检查这种效果，通过向观察者提供一个单一的形式目标（在每次试验中），可以伴随着一个显着的）单一的颜色干扰，与干扰的比例，无干扰试验系统地改变跨块的试验。除了RT，眼动记录，以检查分心干扰效应的机制。结果表明，只有当它们出现在一个相对较小的比例（但不是很大）的试验中时，单分散干扰物才会干扰目标检测。总的来说，研究结果表明，跨维度干扰是一种内隐注意力效应，源于目标与分心物对注意力选择的竞争[Kumada，T.，& Humphreys，G. W.（2002年）的报告。交叉维度干扰和交叉试验抑制。Perecption & Psychophysics，64，493 - 503]，竞争的强度由观察者的（自上而下的）激励来调节，以抑制干扰物维度。(c)2008爱思唯尔有限公司保留所有权利。
In singleton feature search for a form-defined target, the presentation of a task-irrelevant, but salient singleton color distractor is known to interfere with target detection [Theeuwes, J. (1991). Cross-dimensional perceptual selectivity. Perception & Psychophysics, 50, 184-193; Theeuwes, J. (1992). Perceptual selectivity for color and form. Perception & Psychophysics, 51, 599-606]. The present study was designed to re-examine this effect, by presenting observers with a singleton form target (on each trial) that could be accompanied by a salient) singleton color distractor, with the proportion of distractor to no-distractor trials systematically varying across blocks of trials. In addition to RTs, eye movements were recorded in order to examine the mechanisms underlying the distractor interference effect. The results showed that singleton distractors did interfere with target detection only when they were presented on a relatively small (but not on a large) proportion of trials. Overall, the findings suggest that cross-dimensional interference is a covert attention effect, arising from the competition of the target with the distractor for attentional selection [Kumada, T., & Humphreys, G. W. (2002). Cross-dimensional interference and cross-trial inhibition. Perecption & Psychophysics, 64, 493-503], with the strength of the competition being modulated by observers' (top-down) incentive to suppress the distractor dimension. (c) 2008 Elsevier Ltd. All rights reserved.