| Modulatory effects of acupuncture on resting-state networks: A functional MRI study combining independent component analysis and multivariate granger causality analysis. | |
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MedLine Citation:
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PMID: 22069078 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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PURPOSE: To investigate acupuncture specificity by exploring causal relationships of brain networks following acupuncture at GB40 (Qiuxu), with the acupoint KI3 (Taixi) as a control (belonging to the same nerve segment but different meridians). MATERIALS AND METHODS: Needling at acupoints GB40 and KI3 was performed in 12 subjects separately. The specific coherent patterns, resting-state networks (RSNs), were retrieved by independent component analysis (ICA) from functional magnetic resonance imaging (fMRI) data of resting state and post-acupuncture resting states, respectively. Then multivariate Granger causality analysis (mGCA) was applied to evaluate the effective connectivity within and among the detected RSNs-default model, memory, executive, auditory, and motor brain networks. RESULTS: Following acupuncture at GB40, the strength of causal connectivity between the superior temporal gyrus (STG) and anterior insula was enhanced, while the connection strength between the STG and postcentral gyrus increased following acupuncture at KI3. Additionally, the causal influences within the auditory network increased following acupuncture at GB40, in comparison with the executive network following acupuncture at KI3. CONCLUSION: The current study demonstrates that acupuncture at different acupoints could exert different modulatory effects on RSNs. Our findings may help to understand the neurophysiological mechanisms underlying acupuncture specificity. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. |
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Authors:
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Chongguang Zhong; Lijun Bai; Ruwei Dai; Ting Xue; Hu Wang; Yuanyuan Feng; Zhenyu Liu; Youbo You; Shangjie Chen; Jie Tian |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-11-8 |
Journal Detail:
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Title: Journal of magnetic resonance imaging : JMRI Volume: - ISSN: 1522-2586 ISO Abbreviation: - Publication Date: 2011 Nov |
Date Detail:
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Created Date: 2011-11-9 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9105850 Medline TA: J Magn Reson Imaging Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2011 Wiley-Liss, Inc. |
Affiliation:
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Medical Image Processing Group, Institute of Automation, Chinese Academy of Sciences, Beijing, China. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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