Sparse representation of global features of visual images in human   primary visual cortex: Evidence from fMRI

doi:10.1007/s11434-008-0254-0

CORC > 北京大学 > 信息科学技术学院

	Sparse representation of global features of visual images in human primary visual cortex: Evidence from fMRI
	Zhao SongNian ; Yao Li ; Jin Zhen ; Xiong XiaoYun ; Wu Xia ; Zou Qi ; Yao GuoZheng ; Cai XiaoHong ; Liu YiJun
刊名	科学通报英文版
	2008
关键词	global features of visual image fMRI experiment primary visual cortex sparse representation strategy nearly invariant representation integration feedback INFEROTEMPORAL CORTEX RECEPTIVE-FIELDS NATURAL IMAGES SINGLE NEURONS VISION MODELS BRAIN V1
DOI	10.1007/s11434-008-0254-0
英文摘要	In fMRI experiments on object representation in visual cortex, we designed two types of stimuli: one is the gray face image and its line drawing, and the other is the illusion and its corresponding completed illusion. Both of them have the same global features with different minute details so that the results of fMRI experiments can be compared with each other. The first kind of visual stimuli was used in a block design fMRI experiment, and the second was used in an event-related fMRI experiment. Comparing and analyzing interesting visual cortex activity patterns and blood oxygenation level dependent (BOLD)fMRI signal, we obtained results to show some invariance of global features of visual images. A plausible explanation about the invariant mechanism is related with the cooperation of synchronized response to the global features of the visual image with a feedback of shape perception from higher cortex to cortex V1, namely the integration of global features and embodiment of sparse representation and distributed population code.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000258145100010&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Multidisciplinary Sciences; SCI(E); 2; ARTICLE; 14; 2165-2174; 53
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/248739]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Zhao SongNian,Yao Li,Jin Zhen,et al. Sparse representation of global features of visual images in human primary visual cortex: Evidence from fMRI[J]. 科学通报英文版,2008.
APA	Zhao SongNian.,Yao Li.,Jin Zhen.,Xiong XiaoYun.,Wu Xia.,...&Liu YiJun.(2008).Sparse representation of global features of visual images in human primary visual cortex: Evidence from fMRI.科学通报英文版.
MLA	Zhao SongNian,et al."Sparse representation of global features of visual images in human primary visual cortex: Evidence from fMRI".科学通报英文版 (2008).