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Stabilities of negative correlations between blood oxygen level-dependent signals associated with sensory and motor cortices
Tian, Lixia; Jiang, Tianzi; Liang, Meng; Li, Xiaobo; He, Yong; Wang, Kun; Cao, Bingli; Jiang, Tao
2007-07-01
发表期刊HUMAN BRAIN MAPPING
卷号28期号:7页码:681-690
文章类型Article
摘要Compared with positive correlations, negative correlations of blood oxygen level-dependent (BOLD) signals (NCOBSs) have been much less studied. In most related studies, the NCOBSs have been accepted as stable without further consideration. To investigate the stabilities of NCOBSs associated with the auditory, motor, and visual cortices, we evaluated the negative correlation maps of each brain region under different "task-backgrounds" within the same subject-group, as well as within different subject-groups during a conscious resting state. These "task-backgrounds" refer to tasks not expected to activate the specific ROI under consideration and are in some sense analogous to "resting states." We found that the negative correlation maps of the motor and visual cortices were quite variable between either different task-backgrounds or different subject-groups, whereas those of the auditory cortex exhibited some similarities. These results indicate that the NCOBSs associated with the motor and visual cortices were unstable both under task-backgrounds and during the conscious resting state. The auditory cortex tended to have stable NCOBSs during these "resting states" (but scanner noise could make the auditory cortex "less resting"). This study highlights the importance of paying attention to the influence of the stabilities of NCOBSs in related studies and establishes the need for further studies on NCOBSs.
关键词Functional Connectivity Positive Correlation Resting State Task-background
WOS标题词Science & Technology ; Life Sciences & Biomedicine
关键词[WOS]FUNCTIONAL CONNECTIVITY ; COMPONENT ANALYSIS ; BRAIN-FUNCTION ; DEFAULT MODE ; CORTEX ; FMRI ; FLUCTUATIONS ; NETWORKS ; TASK
收录类别SCI
语种英语
WOS研究方向Neurosciences & Neurology ; Radiology, Nuclear Medicine & Medical Imaging
WOS类目Neurosciences ; Neuroimaging ; Radiology, Nuclear Medicine & Medical Imaging
WOS记录号WOS:000247685800011
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文献类型期刊论文
条目标识符http://ir.ia.ac.cn/handle/173211/9427
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.McGill Univ, Montreal Neurol Inst, McConnell Brain Imaging Ctr, Montreal, PQ H3A 2T5, Canada
3.Capital Univ Med Sci, Beijing Tiantan Hosp, Dept Neurosurg, Beijing, Peoples R China
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Tian, Lixia,Jiang, Tianzi,Liang, Meng,et al. Stabilities of negative correlations between blood oxygen level-dependent signals associated with sensory and motor cortices[J]. HUMAN BRAIN MAPPING,2007,28(7):681-690.
APA Tian, Lixia.,Jiang, Tianzi.,Liang, Meng.,Li, Xiaobo.,He, Yong.,...&Jiang, Tao.(2007).Stabilities of negative correlations between blood oxygen level-dependent signals associated with sensory and motor cortices.HUMAN BRAIN MAPPING,28(7),681-690.
MLA Tian, Lixia,et al."Stabilities of negative correlations between blood oxygen level-dependent signals associated with sensory and motor cortices".HUMAN BRAIN MAPPING 28.7(2007):681-690.
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