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Visual short-term memory of local information in briefly viewed natural scenes: Configural and non-configural factors

机译:在简短查看的自然场景中本地信息的视觉短期记忆:配置和非配置因素

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摘要

Typical visual environments contain a rich array of colors, textures, surfaces, and objects, but it is well established that observers do not have access to all of these visual details, even over short intervals (R. A. Rensink, J. K. O`Regan, & J. J. Clark, 1997). Rather, it seems that human vision extracts only partial information from every glance. What is the nature of this selective encoding of the scene? Although there is considerable research on short-term coding of individual objects, much less is known about the representation of a natural scene in visual short-term memory (VSTM). Here, we examine the VSTM of natural scenes using a local recognition task. A major finding is that local recognition performance is better when image segments are viewed in the context of coherent rather than scrambled scenes, suggesting that observers rely on an encoding of a global ‘gist’ of the scene. Variations on this experiment allow quantification of the role of multiple factors in local recognition. Color statistics and the global configural context are found to be more important than local features of the target, even for a local recognition task.
机译:典型的视觉环境包含丰富的颜色,纹理,表面和对象,但是可以确定的是,即使在很短的间隔内,观察者也无法访问所有这些视觉细节(RA Rensink,JK O`Regan和JJ克拉克(1997)。而是,人类的视觉似乎只从每眼中提取部分信息。场景的这种选择性编码的本质是什么?尽管对单个对象的短期编码有大量研究,但对于视觉短期记忆(VSTM)中自然场景的表示知之甚少。在这里,我们使用局部识别任务来检查自然场景的VSTM。一个主要发现是,当在连贯而不是混乱的场景中查看图像片段时,局部识别性能会更好,这表明观察者依赖于场景的整体“要旨”的编码。该实验的变体允许量化多个因素在局部识别中的作用。发现颜色统计信息和全局配置上下文比目标的本地特征更重要,即使对于本地识别任务也是如此。

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