Geng Yuehua, Zhang Xin
Province-Ministry Joint Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability, Hebei University of Technology, Tianjin, China.
Annu Int Conf IEEE Eng Med Biol Soc. 2012;2012:5745-8. doi: 10.1109/EMBC.2012.6347299.
Acupuncture is a useful irritation therapy clinically. Acupuncture at acupoints is proved to have specific function on human body. Magnetic stimulation is a new kind of stimulating technique of non-invasive, painless and effective. The effect of magnetic stimulation on acupoint is a new subject in recent years. In this paper, the electroencephalogram (EEG) evoked potentials (EPs) of magnetic stimulation by stimulating the acupoint of Shenmen(HT7) are studied. The experiments are divided into four groups: quiet, acupoint stimulation, mock stimulation and mock point stimulation. The EEG EPs are collected and an obvious P150 component is obtained. The amplitudes of P150s are analyzed and compared. The P150s are localized in brain by dipole model and the coronal, sagittal and axial plans are painted and observed. The results show that acupoint stimulation on acupoint of Shenmen(HT7) can evoke stronger nerve activity of somatosensory than stimulation on common surface. The dipole source of acupoint stimulation and common surface stimulation are both focused on the cingulated gyrus which related to somatosensory.
针灸在临床上是一种有用的刺激疗法。针刺穴位被证明对人体有特定作用。磁刺激是一种新型的无创、无痛且有效的刺激技术。磁刺激穴位的效应是近年来的一个新课题。本文研究了刺激神门穴（HT7）时磁刺激的脑电图（EEG）诱发电位（EPs）。实验分为四组：安静组、穴位刺激组、模拟刺激组和模拟穴位刺激组。采集EEG EPs并获得明显的P150成分。分析并比较P150的波幅。通过偶极子模型对P150在脑内进行定位，并绘制冠状面、矢状面和轴位平面并进行观察。结果表明，刺激神门穴（HT7）比刺激普通体表能诱发更强的体感神经活动。穴位刺激和普通体表刺激的偶极子源均集中在与体感相关的扣带回。
