Spontaneous activity associated with primary visual cortex: A resting-state fMRI study

CASIA OpenIR > 09年以前成果

	Spontaneous activity associated with primary visual cortex: A resting-state fMRI study
	Wang, Kun 1; Jiang, Tianzi1 ; Yu, Chunshui 2; Li, Lixia Tian Jun 1; Liu, Yong1 ; Zhou, Yuan1 ; Xu, Lijuan 1; Song, Ming1 ; Li, Kuncheng 2
发表期刊	CEREBRAL CORTEX
	2008-03-01
卷号	18 期号:3 页码:697-704
文章类型	Article
摘要	Brain functions during the resting state have attracted considerable attention in the past several years. However, little has been known about spontaneous activity in the sensory cortices in the task-free state. This study used functional magnetic resonance imaging (fMRI) to investigate the existence of spontaneous activity in the primary visual areas (PVA) of normal-sighted subjects and to explore the physiological implications of such activity. Our results revealed that we were able to detect spontaneous activity, which was nonrandom in that it was distinctly clustered both temporally and spatially in the PVA of each subject. In addition, the neural network associated with the PVA-related spontaneous activity included the visual association areas, the precuneus, the precentral/postcentral gyrus, the middle frontal gyrus, the fusiform gyrus, the inferior/middle temporal gyrus, and the parahippocampal gyrus. After considering the functions of these regions, we speculated that the PVA-related spontaneous activity may be associated with memory-related mental imagery and/or visual memory consolidation processes. These findings confirm the presence of spontaneous activity in the PVA and related brain areas. This confirmation supports the perspective that brain is a system intrinsically operating on its own, and sensory information interacts with rather than determines the operation of the system.
关键词	Fmri Primary Visual Areas Resting State Spontaneous Activity
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
关键词[WOS]	POSITRON-EMISSION-TOMOGRAPHY ; HUMAN EXTRASTRIATE CORTEX ; LONG-TERM-MEMORY ; FUNCTIONAL CONNECTIVITY ; MENTAL-IMAGERY ; TEMPORAL CORTEX ; NEURONAL CORRELATE ; ONGOING ACTIVITY ; SEMANTIC MEMORY ; CEREBRAL-CORTEX
收录类别	SCI ; SSCI
语种	英语
WOS研究方向	Neurosciences & Neurology
WOS类目	Neurosciences
WOS记录号	WOS:000253490000020
引用统计	被引频次：123[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ia.ac.cn/handle/173211/9613
专题	09年以前成果
作者单位	1.Chinese Acad Sci, Inst Automat, Natl Lab Pattern Recognit, Beijing 100080, Peoples R China 2.Capital Univ Med Sci, Xuanwu Hosp, Dept Radiol, Beijing 100053, Peoples R China
第一作者单位	模式识别国家重点实验室
推荐引用方式 GB/T 7714	Wang, Kun,Jiang, Tianzi,Yu, Chunshui,et al. Spontaneous activity associated with primary visual cortex: A resting-state fMRI study[J]. CEREBRAL CORTEX,2008,18(3):697-704.
APA	Wang, Kun.,Jiang, Tianzi.,Yu, Chunshui.,Li, Lixia Tian Jun.,Liu, Yong.,...&Li, Kuncheng.(2008).Spontaneous activity associated with primary visual cortex: A resting-state fMRI study.CEREBRAL CORTEX,18(3),697-704.
MLA	Wang, Kun,et al."Spontaneous activity associated with primary visual cortex: A resting-state fMRI study".CEREBRAL CORTEX 18.3(2008):697-704.