Wasserman Edward A, Teng Yuejia, Castro Leyre
University of Iowa, United States.
University of Iowa, United States.
Behav Processes. 2014 May;104:44-52. doi: 10.1016/j.beproc.2014.01.021. Epub 2014 Jan 31.
Repeated pairings of a particular visual context with a specific location of a target stimulus facilitate target search in humans. We explored an animal model of this contextual cueing effect using a novel Cueing-Miscueing design. Pigeons had to peck a target which could appear in one of four possible locations on four possible color backgrounds or four possible color photographs of real-world scenes. On 80% of the trials, each of the contexts was uniquely paired with one of the target locations; on the other 20% of the trials, each of the contexts was randomly paired with the remaining target locations. Pigeons came to exhibit robust contextual cueing when the context preceded the target by 2s, with reaction times to the target being shorter on correctly-cued trials than on incorrectly-cued trials. Contextual cueing proved to be more robust with photographic backgrounds than with uniformly colored backgrounds. In addition, during the context-target delay, pigeons predominately pecked toward the location of the upcoming target, suggesting that attentional guidance contributes to contextual cueing. These findings confirm the effectiveness of animal models of contextual cueing and underscore the important part played by associative learning in producing the effect. This article is part of a Special Issue entitled: SQAB 2013: Contextual Con.
特定视觉情境与目标刺激的特定位置反复配对有助于人类进行目标搜索。我们使用一种新颖的提示-误提示设计探索了这种情境提示效应的动物模型。鸽子必须啄一个目标,该目标可能出现在四种可能颜色背景或四张现实场景彩色照片上的四个可能位置之一。在80%的试验中,每个情境都与一个目标位置唯一配对;在另外20%的试验中,每个情境与其余目标位置随机配对。当情境比目标提前2秒出现时,鸽子表现出强烈的情境提示,正确提示试验中对目标的反应时间比错误提示试验中的短。事实证明,与纯色背景相比,照片背景的情境提示更强。此外,在情境-目标延迟期间,鸽子主要朝着即将出现目标的位置啄,这表明注意力引导有助于情境提示。这些发现证实了情境提示动物模型的有效性,并强调了联想学习在产生这种效应中所起的重要作用。本文是名为:SQAB 2013:情境控制的特刊的一部分。