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Spontaneous activity associated with primary visual cortex: A resting-state fMRI study
Wang, Kun1; Jiang, Tianzi1; Yu, Chunshui2; Li, Lixia Tian Jun1; Liu, Yong1; Zhou, Yuan1; Xu, Lijuan1; Song, Ming1; Li, Kuncheng2
2008-03-01
发表期刊CEREBRAL CORTEX
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:68[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
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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.
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