Visual search for dimensionally redundant pop-out targets:: Parallel-coactive processing of dimensions is location specific
Visual search for dimensionally redundant pop-out targets:: Parallel-coactive processing of dimensions is location specific
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DOI：
10.1037//0096-1523.28.6.1303
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发表时间：
2002-12-01
影响因子：
2.1
通讯作者：
Heller, D
中科院分区：
文献类型：
--
作者：
Krummenacher, J;Müller, HJ;Heller, D
三个视觉搜索实验研究冗余增益的单一和双重奇一出功能目标，不同的方向，颜色，或两者。在实验1中，冗余目标显示器包含（a）在2个维度中定义的单个目标，（B）各自在不同维度中定义的双目标，或（c）均在相同维度中定义的双目标。冗余增益，相对于，单一的非冗余目标，从第一个条件的下降，违反J.米勒的。（1982）种族模型不平等（RMI）只在前两种情况下表现出来。实验2系统地改变了双目标之间的空间分离，每个定义在不同的维度。只有当这两个目标占领附近地点时，才明显违反最低安置点。实验3提供了证据的RMI违规尺寸冗余的目标在precued（可能的）和noncued（不太可能）显示位置。满员你总之，这些结果表明，有一个共同的机制，由目标信号在不同的维度（而不是由信号在相同的维度）的共激活，共激活效应是空间特异性的，共激活的机制是位于一个预注意，知觉阶段的处理。
Three visual search experiments investigated redundancy gains for single and dual odd-one-out feature targets that differed from distractors in orientation, color, or both. In Experiment 1, redundant-target displays contained (a) a single target defined in 2 dimensions, (b) dual targets each defined in a different dimension, or (c) dual targets both defined in the same dimension. The redundancy gains, relative to, single nonredundant targets, decreased from the first condition on, with violations of J. Miller's. (1982) race model inequality (RMI) manifested only in the first 2 conditions. Experiment 2 systematically varied the spatial separation between dual targets each defined in a different dimension. Violations of the RMI were evident only when the 2 targets occupied nearby locations. Experiment 3 provided evidence of RMI violations by dimensionally redundant targets at both precued (likely) and noncued (unlikely) display locations. Taken. together, these results suggest that there is coactivation of a common mechanism by target signals in different dimensions (not by signals in the same dimension), that the coactivation effects are spatially specific, and that the coactivated mechanisms are located at a preattentive, perceptual stage of processing.