van der Helm Peter A, Treder Matthias S
Radboud University Nijmegen, Donders Institute for Brain, Cognition, and Behaviour, Montessorilaan 3, 6525 HR Nijmegen, The Netherlands.
Vision Res. 2009 Nov;49(23):2754-63. doi: 10.1016/j.visres.2009.08.015. Epub 2009 Aug 20.
Symmetry and repetition are recognized as cues in perceptual organization, but there is disagreement on whether they are detected automatically. This disagreement is resolved by noting that some studies mixed up shape regularities and shape antiregularities (i.e., symmetries and repetitions with mismatches in contour curvature polarity). The results of two experiments indicate that a task-irrelevant regularity is automatically picked up by the visual system, whereas a task-irrelevant antiregularity is not. This suggests that detection of regularities is part of the visual system's intrinsic encoding, whereas detection of antiregularities requires higher cognitive strategies involving selective attention.
对称和重复被视为知觉组织中的线索，但对于它们是否能被自动检测存在分歧。通过注意到一些研究混淆了形状规则性和形状反规则性（即轮廓曲率极性不匹配的对称和重复），这一分歧得以解决。两项实验的结果表明，视觉系统会自动捕捉与任务无关的规则性，而与任务无关的反规则性则不会。这表明规则性的检测是视觉系统内在编码的一部分，而反规则性的检测则需要涉及选择性注意的更高层次认知策略。
