Waiguan Stimulation May Kindle Anticorrelated Brain Networks: Functional Magnetic Resonance Imaging Data Revisited

Journal of Acupuncture and Meridian Studies
Gustav WikBao-Ci Shan

Abstract

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.

References

Apr 1, 1993·Psychiatry Research·G WikT Greitz
Feb 24, 2001·Proceedings of the National Academy of Sciences of the United States of America·M E RaichleG L Shulman
Dec 2, 2005·The International Journal of Neuroscience·Gustav WikMats Fredrikson
May 25, 2010·Autonomic Neuroscience : Basic & Clinical·Kathleen K S HuiKenneth K Kwong

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