Alexander Robert G, Zelinsky Gregory J
Department of Psychology, Stony Brook University, Stony Brook, NY 11794-2500, USA.
Vision Res. 2012 Feb 1;54:20-30. doi: 10.1016/j.visres.2011.12.004. Epub 2012 Jan 2.
Do the target-distractor and distractor-distractor similarity relationships known to exist for simple stimuli extend to real-world objects, and are these effects expressed in search guidance or target verification? Parts of photorealistic distractors were replaced with target parts to create four levels of target-distractor similarity under heterogenous and homogenous conditions. We found that increasing target-distractor similarity and decreasing distractor-distractor similarity impaired search guidance and target verification, but that target-distractor similarity and heterogeneity/homogeneity interacted only in measures of guidance; distractor homogeneity lessens effects of target-distractor similarity by causing gaze to fixate the target sooner, not by speeding target detection following its fixation.
已知简单刺激中存在的目标-干扰物和干扰物-干扰物相似性关系是否能扩展到现实世界的物体上，这些效应是在搜索引导还是目标验证中体现出来？将逼真的干扰物的部分替换为目标部分，以在异质和同质条件下创建四个目标-干扰物相似度级别。我们发现，增加目标-干扰物相似度和降低干扰物-干扰物相似度会损害搜索引导和目标验证，但目标-干扰物相似度与异质性/同质性仅在引导测量中相互作用；干扰物同质性通过使注视更快地固定在目标上，而不是通过在目标固定后加快目标检测速度，来减轻目标-干扰物相似度的影响。
