Differential spectral power alteration following acupuncture at different designated places revealed by magnetoencephalography

Youbo You; Lijun Bai; Ruwei Dai; Ting Xue; Chongguang Zhong; Zhenyu Liu; Hu Wang; Yuanyuan Feng; Wenjuan Wei; Jie Tian

doi:10.1117/12.911261

14 April 2012 Differential spectral power alteration following acupuncture at different designated places revealed by magnetoencephalography

Youbo You, Lijun Bai, Ruwei Dai, Ting Xue, Chongguang Zhong, Zhenyu Liu, Hu Wang, Yuanyuan Feng, Wenjuan Wei, Jie Tian

Author Affiliations +

Proceedings Volume 8317, Medical Imaging 2012: Biomedical Applications in Molecular, Structural, and Functional Imaging; 83170U (2012) https://doi.org/10.1117/12.911261
Event: SPIE Medical Imaging, 2012, San Diego, California, United States

Abstract

As an ancient therapeutic technique in Traditional Chinese Medicine, acupuncture has been used increasingly in modern society to treat a range of clinical conditions as an alternative and complementary therapy. However, acupoint specificity, lying at the core of acupuncture, still faces many controversies. Considering previous neuroimaging studies on acupuncture have mainly employed functional magnetic resonance imaging, which only measures the secondary effect of neural activity on cerebral metabolism and hemodynamics, in the current study, we adopted an electrophysiological measurement technique named magnetoencephalography (MEG) to measure the direct neural activity. 28 healthy college students were recruited in this study. We filtered MEG data into 5 consecutive frequency bands (delta, theta, alpha, beta and gamma band) and grouped 140 sensors into 10 main brain regions (left/right frontal, central, temporal, parietal and occipital regions). Fast Fourier Transformation (FFT) based spectral analysis approach was further performed to explore the differential band-limited power change patterns of acupuncture at Stomach Meridian 36 (ST36) using a nearby nonacupoint (NAP) as control condition. Significantly increased delta power and decreased alpha as well as beta power in bilateral frontal ROIs were observed following stimulation at ST36. Compared with ST36, decreased alpha power in left and right central, right parietal as well as right temporal ROIs were detected in NAP group. Our research results may provide additional evidence for acupoint specificity.

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Youbo You, Lijun Bai, Ruwei Dai, Ting Xue, Chongguang Zhong, Zhenyu Liu, Hu Wang, Yuanyuan Feng, Wenjuan Wei, and Jie Tian "Differential spectral power alteration following acupuncture at different designated places revealed by magnetoencephalography", Proc. SPIE 8317, Medical Imaging 2012: Biomedical Applications in Molecular, Structural, and Functional Imaging, 83170U (14 April 2012); https://doi.org/10.1117/12.911261

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KEYWORDS

Magnetoencephalography

Brain

Head

Sensors

Functional magnetic resonance imaging

Medicine

Hemodynamics

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