Constant contour integration in peripheral vision for stimuli with good Gestalt properties

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	Constant contour integration in peripheral vision for stimuli with good Gestalt properties
	Kuai, Shu-Guang ; Yu, Cong
刊名	JOURNAL OF VISION
	2006
卷号	6 期号:12 页码:1412-1420
关键词	contour integration peripheral vision good Gestalt PRIMARY VISUAL-CORTEX FIELD PERCEPTION ATTENTION CLOSURE
ISSN号	1534-7362
通讯作者	Yu, C (reprint author), Beijing Normal Univ, Inst Cognit Neurosci & Learning, Beijing 100875, Peoples R China,yucong@bnu.edu.cn
英文摘要	The visual system integrates discrete but aligned local stimuli to form percept of global contours. Previous experiments using "snake'' contours showed that contour integration was mainly present in foveal vision but absent or greatly weakened in peripheral vision. In this study, we demonstrated that, for contour stimuli such as circles and ellipses, which bore good Gestalt properties, contour integration for shape detection and discrimination was nearly constant from the fovea to up to 35 degrees visual periphery! Contour integration was impaired by local orientation and position jitters of contour elements, indicating that the same local contour linking mechanisms revealed with snake contour stimuli also played critical roles in integration of our good Gestalt stimuli. Contour integration was also unaffected by global position jittering up to 20% of the contour size and by dramatic shape jittering, which excluded non-contour integration processes such as detection of various local cues and template matching as alternative mechanisms for uncompromised peripheral perception of good Gestalt stimuli. Peripheral contour integration also presented an interesting upper-lower visual field symmetry after asymmetries of contrast sensitivity and shape discrimination were discounted. The constant peripheral performance might benefit from easy detection of good Gestalt stimuli, which popped out from background noise, from a boost of local contour linking by top down influences and/or from multielement contour linking by long-range interactions.
学科主题	Ophthalmology
收录类别	SCI
语种	英语
公开日期	2012-07-23
内容类型	期刊论文
源URL	[http://ir.sibs.ac.cn/handle/331001/1845]
专题	上海神经科学研究所_神经所(总)
推荐引用方式 GB/T 7714	Kuai, Shu-Guang,Yu, Cong. Constant contour integration in peripheral vision for stimuli with good Gestalt properties[J]. JOURNAL OF VISION,2006,6(12):1412-1420.
APA	Kuai, Shu-Guang,&Yu, Cong.(2006).Constant contour integration in peripheral vision for stimuli with good Gestalt properties.JOURNAL OF VISION,6(12),1412-1420.
MLA	Kuai, Shu-Guang,et al."Constant contour integration in peripheral vision for stimuli with good Gestalt properties".JOURNAL OF VISION 6.12(2006):1412-1420.