Neural Activities in V1 Create a Bottom-Up Saliency Map

doi:10.1016/j.neuron.2011.10.035

CORC > 北京大学 > 生命科学学院

	Neural Activities in V1 Create a Bottom-Up Saliency Map
	Zhang, Xilin ; Zhaoping, Li ; Zhou, Tiangang ; Fang, Fang
刊名	neuron
	2012
关键词	FRONTAL EYE FIELD SELECTIVE VISUAL-ATTENTION INTRAPARIETAL SULCUS MACAQUE MONKEY CORTICAL AREAS CORTEX EXTRASTRIATE COMPONENTS STIMULI SEARCH
DOI	10.1016/j.neuron.2011.10.035
英文摘要	The bottom-up contribution to the allocation of exogenous attention is a saliency map, whose neural substrate is hard to identify because of possible contamination by top-down signals. We obviated this possibility using stimuli that observers could not perceive, but that nevertheless, through orientation contrast between foreground and background regions, attracted attention to improve a localized visual discrimination. When orientation contrast increased, so did the degree of attraction, and two physiological measures: the amplitude of the earliest (C1) component of the ERP, which is associated with primary visual cortex, and fMRI BOLD signals in areas V1-V4 (but not the intraparietal sulcus). Significantly, across observers, the degree of attraction correlated with the C1 amplitude and just the V1 BOLD signal. These findings strongly support the proposal that a bottom-up saliency map is created in V1, challenging the dominant view that the saliency map is generated in the parietal cortex.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000299446800017&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Neurosciences; SCI(E); PubMed; 40; ARTICLE; 1; 183-192; 73
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/162791]
专题	生命科学学院心理与认知科学学院
推荐引用方式 GB/T 7714	Zhang, Xilin,Zhaoping, Li,Zhou, Tiangang,et al. Neural Activities in V1 Create a Bottom-Up Saliency Map[J]. neuron,2012.
APA	Zhang, Xilin,Zhaoping, Li,Zhou, Tiangang,&Fang, Fang.(2012).Neural Activities in V1 Create a Bottom-Up Saliency Map.neuron.
MLA	Zhang, Xilin,et al."Neural Activities in V1 Create a Bottom-Up Saliency Map".neuron (2012).