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New Insights into Signed Path Coefficient Granger Causality Analysis | |
Zhang, Jian1,2; Li, Chong1![]() | |
发表期刊 | FRONTIERS IN NEUROINFORMATICS
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2016-10-27 | |
卷号 | 10 |
文章类型 | Article |
摘要 | Granger causality analysis, as a time series analysis technique derived from econometrics, has been applied in an ever-increasing number of publications in the field of neuroscience, including fMRI, EEG/MEG, and fNIRS. The present study mainly focuses on the validity of "signed path coefficient Granger causality," a Granger-causality-derived analysis method that has been adopted by many fMRI researches in the last few years. This method generally estimates the causality effect among the time series by an order-1 autoregression, and defines a positive or negative coefficient as an "excitatory" or "inhibitory" influence. In the current work we conducted a series of computations from resting-state fMRI data and simulation experiments to illustrate the signed path coefficient method was flawed and untenable, due to the fact that the autoregressive coefficients were not always consistent with the real causal relationships and this would inevitablely lead to erroneous conclusions. Overall our findings suggested that the applicability of this kind of causality analysis was rather limited, hence researchers should be more cautious in applying the signed path coefficient Granger causality to fMRI data to avoid misinterpretation. |
关键词 | Signed Path Coefficient Granger Causality Fmri Model Order Vector Autoregression |
WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
DOI | 10.3389/fninf.2016.00047 |
关键词[WOS] | PARTIAL DIRECTED COHERENCE ; MULTIVARIATE TIME-SERIES ; EFFECTIVE CONNECTIVITY ; FMRI DATA ; INFORMATION-FLOW ; FUNCTIONAL CONNECTIVITY ; BRAIN STRUCTURES ; BOLD SIGNALS ; NETWORK ; CORTEX |
收录类别 | SCI |
语种 | 英语 |
项目资助者 | National Key Basic Research and Development Program (973)(2011CB707801) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB02030300) ; Natural Science Foundation of China(91132301) ; National Natural Science Foundation of China(11571308) |
WOS研究方向 | Mathematical & Computational Biology ; Neurosciences & Neurology |
WOS类目 | Mathematical & Computational Biology ; Neurosciences |
WOS记录号 | WOS:000386259600001 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ia.ac.cn/handle/173211/13332 |
专题 | 脑图谱与类脑智能实验室_脑网络组研究 |
作者单位 | 1.Zhejiang Univ, Sch Math Sci, Hangzhou, Zhejiang, Peoples R China 2.Chinese Acad Sci, Inst Automat, Brainnetome Ctr, Beijing, Peoples R China |
第一作者单位 | 中国科学院自动化研究所 |
推荐引用方式 GB/T 7714 | Zhang, Jian,Li, Chong,Jiang, Tanzi. New Insights into Signed Path Coefficient Granger Causality Analysis[J]. FRONTIERS IN NEUROINFORMATICS,2016,10. |
APA | Zhang, Jian,Li, Chong,&Jiang, Tanzi.(2016).New Insights into Signed Path Coefficient Granger Causality Analysis.FRONTIERS IN NEUROINFORMATICS,10. |
MLA | Zhang, Jian,et al."New Insights into Signed Path Coefficient Granger Causality Analysis".FRONTIERS IN NEUROINFORMATICS 10(2016). |
条目包含的文件 | 条目无相关文件。 |
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