Perceptual constraints on implicit learning of spatial context
Perceptual constraints on implicit learning of spatial context
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DOI：
10.1080/13506280042000162
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发表时间：
2002-04-01
期刊：
影响因子：
2
通讯作者：
Chun, MM
中科院分区：
文献类型：
--
作者：
Olson, IR;Chun, MM
对象的不变空间关系可以提供丰富的上下文信息源。视觉语境可以通过内隐学习机制帮助个体物体的定位，如语境提示范式（Chun & Jiang，1998）所揭示的。什么定义了视觉环境？情境学习有多强大？它是受感知限制的吗？在这里，我们调查是否本地上下文，围绕一个目标，和远程上下文，空间上不符合一个目标，可以影响目标定位。在上下文线索任务中，参与者通过重复暴露于以不变模式排列的项目来隐式地学习上下文。实验1和2表明，只有本地上下文促进目标定位。而实验3则表明，当目标和背景没有被随机信息分开时，长距离背景可以启动目标定位。实验4表明，按颜色分组不影响上下文线索，这表明空间特征比表面特征在空间上下文线索中发挥更重要的作用。在单独的分析中，发现学习和表现的视觉半野差异。总之，研究结果表明，内隐学习的空间背景是强大的噪声和偏向空间分组的信息。
Invariant spatial relationships of objects may provide a rich source of contextual information. Visual context can assist localization of individual objects via an implicit learning mechanism, as revealed in the contextual cueing paradigm (Chun & Jiang, 1998). What defines a visual context? How robust is contextual learning? And is it perceptually constrained? Here we investigate whether both local context that surround a target, and long-range context that does not spatially coincide with a target, can influence target localization. In the contextual cueing task, participants implicitly learned a context by repeated exposure to items arranged in invariant patterns. Experiments 1 and 2 suggest that only local context facilitates target localization. However, Experiment 3 showed that long-range context can prime target location when target and context are not separated by random information. Experiment 4 showed that grouping by colour does not affect contextual cueing, suggesting that spatial features play a more important role than surface features in spatial contextual cueing. In separate analyses, visual hemifield differences were found for learning and performance. In sum, the results indicate that implicit learning of spatial context is robust across noise and biased towards spatially grouped information.