Spreading and synchronization of intrinsic signals in visual cortex of macaque monkey evoked by a localized visual stimulus

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	Spreading and synchronization of intrinsic signals in visual cortex of macaque monkey evoked by a localized visual stimulus
	Li, CY
刊名	BRAIN RESEARCH
	2003
卷号	985 期号:1 页码:13-20
关键词	optical imaging visual cortex macaque monkey FUNCTIONAL ARCHITECTURE INTEGRATION FIELD RECEPTIVE-FIELD CAT ORGANIZATION CONNECTIONS NEURONS
ISSN号	0006-8993
通讯作者	Li, CY (reprint author), Chinese Acad Sci, Shanghai Inst Biol Sci, Inst Neurosci, Shanghai 200031, Peoples R China,
英文摘要	Spatio-temporal maps of the occipital cortex of macaque monkeys were analyzed using optical imaging of intrinsic signals. The images obtained during localized visual stimulation (IS) were compared with the images obtained on presentation of a blank screen (IB). We first investigated spontaneous variations of the intrinsic signals by analyzing the 100 IBs for each of the three cortical areas. Slow periodical activation was observed in alternation over the cortical areas. Cross-correlation analysis indicated that synchronization of spontaneous activation only took place within each cortical area, but not between them. When a small, drifting grating (2degreesX2degrees) was presented on the fovea. a dark spot appeared in the optical image at the cortical representation of this retinal location. It spread bilaterally along the border between V1 and V2, continuing as a number of parallel dark bands covering a large area of the lateral surface of V1. Cross-correlation analysis showed that during visual stimulation the intrinsic signals over all of the three cortical areas were synchronized, with in-phase activation of V1 and V2 and anti-phase activation of V4 and V1/V2. The significance of these extensive synergistic and antagonistic interactions between different cortical areas is discussed. (C) 2003 Elsevier B.V. All rights reserved.
学科主题	Neurosciences & Neurology
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/331001/2006]
专题	上海神经科学研究所_神经所(总)
推荐引用方式 GB/T 7714	Li, CY. Spreading and synchronization of intrinsic signals in visual cortex of macaque monkey evoked by a localized visual stimulus[J]. BRAIN RESEARCH,2003,985(1):13-20.
APA	Li, CY.(2003).Spreading and synchronization of intrinsic signals in visual cortex of macaque monkey evoked by a localized visual stimulus.BRAIN RESEARCH,985(1),13-20.
MLA	Li, CY."Spreading and synchronization of intrinsic signals in visual cortex of macaque monkey evoked by a localized visual stimulus".BRAIN RESEARCH 985.1(2003):13-20.