Neural correlates of covert orienting of visual spatial attention along   vertical and horizontal dimensions

doi:10.1016/j.brainres.2006.12.031

CORC > 北京大学 > 心理与认知科学学院

	Neural correlates of covert orienting of visual spatial attention along vertical and horizontal dimensions
	Mao, Lihua ; Zhou, Bin ; Zhou, Wu ; Han, Shihui
刊名	脑研究
	2007
关键词	attention fMRI meridian spatial orienting visual field HUMAN PARIETAL CORTEX SELECTIVE ATTENTION VISUOSPATIAL ATTENTION EYE-MOVEMENTS RETINOTOPIC ORGANIZATION DIRECTED ATTENTION BRAIN POTENTIALS FUNCTIONAL MRI FAR SPACE NEGLECT
DOI	10.1016/j.brainres.2006.12.031
英文摘要	Covert orienting of spatial attention along the horizontal meridian of the visual field is mediated by a fronto-parietal neural network. The neural substrates underlying covert orienting of attention along the vertical meridian, however, are less understood. We recorded hemodynamic responses using functional magnetic resonance imaging (fMRI) from healthy volunteers in covert visual orienting tasks that required to detect targets either at the fixation or at peripheral attended locations on the horizontal or vertical meridian in the left (LVF), right (RVF), upper (UVF), and lower (LoVF) visual fields. We found that, relative to when attention was at the fixation, covert orienting of attention along the horizontal and vertical meridia induced enhanced activities in the superior parietal and frontal lobes bilaterally and the cerebellum. In addition, attention to the LoVF and UVF generated stronger activation in the medial frontal cortex, anterior cingulate, precuneus, and the cerebellum relative to attention along the horizontal meridian. The reversed contrast, however, produced stronger activation in the right lingual gyrus and right premotor cortex. The fMRI results suggest that, while a common neural network is engaged in guiding visual spatial attention along the vertical and horizontal dimensions, unique neural correlates are associated with covert attentional orienting along the vertical and horizontal meridia of the visual field. (c) 2006 Elsevier B.V. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000244882500014&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Neurosciences; SCI(E); PubMed; 16; ARTICLE; 1; 142-153; 1136
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/198245]
专题	心理与认知科学学院
推荐引用方式 GB/T 7714	Mao, Lihua,Zhou, Bin,Zhou, Wu,et al. Neural correlates of covert orienting of visual spatial attention along vertical and horizontal dimensions[J]. 脑研究,2007.
APA	Mao, Lihua,Zhou, Bin,Zhou, Wu,&Han, Shihui.(2007).Neural correlates of covert orienting of visual spatial attention along vertical and horizontal dimensions.脑研究.
MLA	Mao, Lihua,et al."Neural correlates of covert orienting of visual spatial attention along vertical and horizontal dimensions".脑研究 (2007).