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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
Source PublicationCEREBRAL CORTEX
2008-03-01
Volume18Issue:3Pages:697-704
SubtypeArticle
AbstractBrain 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.
KeywordFmri Primary Visual Areas Resting State Spontaneous Activity
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
WOS KeywordPOSITRON-EMISSION-TOMOGRAPHY ; HUMAN EXTRASTRIATE CORTEX ; LONG-TERM-MEMORY ; FUNCTIONAL CONNECTIVITY ; MENTAL-IMAGERY ; TEMPORAL CORTEX ; NEURONAL CORRELATE ; ONGOING ACTIVITY ; SEMANTIC MEMORY ; CEREBRAL-CORTEX
Indexed BySCI ; SSCI
Language英语
WOS Research AreaNeurosciences & Neurology
WOS SubjectNeurosciences
WOS IDWOS:000253490000020
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ia.ac.cn/handle/173211/9613
Collection09年以前成果
Affiliation1.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
Recommended Citation
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.
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