Niimi Ryosuke, Watanabe Katsumi, Yokosawa Kazuhiko
Department of Psychology, Graduate School of Humanities and Sociology, The University of Tokyo, Tokyo, Japan.
Psychol Res. 2008 Sep;72(5):567-79. doi: 10.1007/s00426-008-0133-y. Epub 2008 Jan 24.
It has been speculated that visual symmetry perception from dynamic stimuli involves mechanisms different from those for static stimuli. However, previous studies found no evidence that dynamic stimuli lead to active temporal processing and improve symmetry detection. In this study, four psychophysical experiments investigated temporal processing in symmetry perception using both dynamic and static stimulus presentations of dot patterns. In Experiment 1, rapid successive presentations of symmetric patterns (e.g., 16 patterns per 853 ms) produced more accurate discrimination of orientations of symmetry axes than static stimuli (single pattern presented through 853 ms). In Experiments 2-4, we confirmed that the dynamic-stimulus advantage depended upon presentation of a large number of unique patterns within a brief period (853 ms) in the dynamic conditions. Evidently, human vision takes advantage of temporal processing for symmetry perception from dynamic stimuli.
据推测，动态刺激产生的视觉对称感知涉及与静态刺激不同的机制。然而，先前的研究没有发现证据表明动态刺激会引发活跃的时间处理并改善对称检测。在本研究中，四项心理物理学实验使用点图案的动态和静态刺激呈现来研究对称感知中的时间处理。在实验1中，对称图案的快速连续呈现（例如，每853毫秒呈现16个图案）比静态刺激（在853毫秒内呈现单个图案）能更准确地区分对称轴的方向。在实验2至4中，我们证实动态刺激的优势取决于在动态条件下短时间（853毫秒）内呈现大量独特图案。显然，人类视觉利用时间处理来从动态刺激中感知对称。
