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KMID : 1147720160090010022
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Journal of Acupuncture and Meridian Studies
2016 Volume.9 No. 1 p.22 ~ p.25
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Waiguan Stimulation May Kindle Anticorrelated Brain Networks: Functional Magnetic Resonance Imaging Data Revisited
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Wik Gustav
Huang Yong
Zeng Tongjun
Qu Shanshan
Zheng Yu
Zhang Jiping
Lai Xinsheng
Tang Chunzhi
Shan Baoci
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Abstract
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Subtraction of functional magnetic resonance imaging activity data results in a loss of information regarding possible general patterns of brain activation under experimental conditions. We, hence, reanalyzed previous Waiguan acupuncture data to qualitatively elucidate patterns of cerebral correlations to acupuncture and placebo conditions. Healthy individuals (n = 24) were randomly allocated to true and sham Waiguan acupuncture and to true and sham needling of a nonacupuncture point (nonacupoint), and functional magnetic resonance imaging scans were performed during stimulation. Statistical parametric mapping group comparisons revealed clearly different patterns of activation between Waiguan stimulation and the corresponding stimulation of a nonacupoint. The former condition produced less neocortical activation than the nonacupoint stimulation. Cerebellar activation was typically seen only during true Waiguan acupuncture. The reduced neocortical activity during both true and sham Waiguan acupuncture may indicate that this point activates anticorrelated networks, with possible intrinsic healing properties. Cerebellar activation during true Waiguan acupuncture implies the region's influence on healing networks.
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KEYWORD
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acupoint, brain imaging, cognition, default-mode network, Waiguan
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