The dynamic-stimulus advantage of visual symmetry perception
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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.
KeywordsPattern Frequency Rapid Serial Visual Presentation Successive Presentation Individual Pattern Symmetric Pattern
Supported by Grants-in-Aid for Scientific Research, the Japan Society for the Promotion of Science (awarded to R. N. and K. Y., respectively), and by Shimojo Implicit Brain Function Project, ERATO, Japan Science and Technology Agency (to K. W.).
- Coltheart, M. (1980). Iconic memory and visible persistence. Perception & Psychophysics, 27, 183–228.Google Scholar
- Jenkins, B. (1982). Redundancy in the perception of bilateral symmetry in dot textures. Perception & Psychophysics, 32, 171–177.Google Scholar
- Jenkins, B. (1983). Component processes in the detection of bilaterally symmetric dot textures. Perception & Psychophysics, 34, 433–440.Google Scholar
- Julesz, B. (1971). Foundations of cyclopean perception. Chicago: University of Chicago Press.Google Scholar
- Julesz, B. (1981). Figure and ground perception in briefly presented isodipole textures. In M. Kubovy, & J. Pomenrantz (Eds.), Perceptual organization (pp. 27–54). Hillsdale: Erlbaum.Google Scholar
- Kanwisher, N. (2003). The ventral visual object pathway in humans: Evidence from fMRI. In L. M. Chalupa, & J. S. Werner (Eds.), The visual neurosciences (pp. 1179–1189). Cambridge: The MIT Press.Google Scholar
- Malach, R., Reppas, J. B., Benson, R. R., Kwong, K. K., Jiang, H., Kennedy, W. A., et al. (1995). Object-related activity revealed by functional magnetic resonance imaging in human occipital cortex. Proceedings of the National Academy of Sciences of the USA, 92, 8135–8139.PubMedCrossRefGoogle Scholar
- Tyler, C. W. (Ed.). (1996). Human symmetry perception and its computational analysis. Utrecht: VSP.Google Scholar
- Wagemans, J., Van Gool, L., & d’Ydewalle, G. (1991). Detection of symmetry in tachistoschopically presented dot patterns: Effects of multiple axes and skewing. Perception & Psychophysics, 50, 413–427.Google Scholar