Attention-Dependent Early Cortical Suppression Contributes to Crowding

doi:10.1523/JNEUROSCI.1140-14.2014

CORC > 北京大学 > 生命科学学院

	Attention-Dependent Early Cortical Suppression Contributes to Crowding
	Chen, Juan ; He, Yingchen ; Zhu, Ziyun ; Zhou, Tiangang ; Peng, Yujia ; Zhang, Xilin ; Fang, Fang
刊名	journal of neuroscience
	2014
关键词	attention crowding event-related potential fMRI primary visual cortex PRIMARY VISUAL-CORTEX SPATIAL SELECTIVE ATTENTION HUMAN EXTRASTRIATE CORTEX OBJECT RECOGNITION FUNCTIONAL MRI STIMULUS STRIATE MACAQUE AREAS MECHANISMS
DOI	10.1523/JNEUROSCI.1140-14.2014
英文摘要	Crowding, the identification difficulty for a target in the presence of nearby flankers, is ubiquitous in spatial vision and is considered a bottleneck of object recognition and visual awareness. Despite its significance, the neural mechanisms of crowding are still unclear. Here, we performed event-related potential and fMRI experiments to measure the cortical interaction between the target and flankers in human subjects. We found that the magnitude of the crowding effect was closely associated with an early suppressive cortical interaction. The cortical suppression was reflected in the earliest event-related potential component (C1), which originated in V1, and in the BOLD signal in V1, but not other higher cortical areas. Intriguingly, spatial attention played a critical role in the manifestation of the suppression. These findings provide direct and converging evidence that attention-dependent V1 suppression contributes to crowding at a very early stage of visual processing.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000341017300003&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Neurosciences; SCI(E); PubMed; 15; ARTICLE; ffang@pku.edu.cn; 32; 10465-10474; 34
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/323367]
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	Chen, Juan,He, Yingchen,Zhu, Ziyun,et al. Attention-Dependent Early Cortical Suppression Contributes to Crowding[J]. journal of neuroscience,2014.
APA	Chen, Juan.,He, Yingchen.,Zhu, Ziyun.,Zhou, Tiangang.,Peng, Yujia.,...&Fang, Fang.(2014).Attention-Dependent Early Cortical Suppression Contributes to Crowding.journal of neuroscience.
MLA	Chen, Juan,et al."Attention-Dependent Early Cortical Suppression Contributes to Crowding".journal of neuroscience (2014).