Wu B, Hu X, Xu J, Yang B, Li W, Li B
Fujian Institute of Traditional Chinese Medicine, Fuzhou.
Zhen Ci Yan Jiu. 1993;18(2):128-31, 114.
Plotting out the meridian course with objective methods is one of the important projects in the research of meridian at present. Therefore, selecting a proper indication to plot out the meridian track over the body surface during acupuncture is significant for elucidating the essence of meridian. The purpose of this paper was to plot out the Large Intestine Meridian track by blocking the acupuncture effect with mechanical pressure, when electroretinogram (ERG) was taken as a responsive indication. The plotting out the track was carried out on 5 subjects with marked propagated sensation along meridians (PSM) and 5 without PSM. The pressure was applied on Wenliu (LI 7), Shoushanli (LI 10), Quchi (LI 11), Binao (LI 14) and Jianyu (LI 15) respectively, when Hegu (LI 4) was punctured. Under such condition the variation of ERG amplitude decreased markedly or even disappeared. But the variation rate of ERG amplitude was still distinctly increased when the pressure was applied on both sides of any above points. The difference is highly significant (P < 0.01). The results revealed that the meridian track over the body surface during acupuncture could be plotted out not only in the subjects with marked PSM, but also in those without PSM, when the proper objective indication was used. Its course basically coincided with that of the meridian described in the books of traditional Chinese medicine. Now it is safe to say the meridian track over the body surface is existed in human in common. It provides a new approach to plot out the meridian course with objective methods and opens up broad prospects for further application.
运用客观方法描绘经络路线是目前经络研究的重要课题之一。因此，在针刺时选择合适的指标来描绘体表经络路线对于阐明经络的本质具有重要意义。本文旨在以视网膜电图（ERG）作为反应指标，通过机械压迫阻断针刺效应来描绘大肠经路线。对5名有显著循经感传（PSM）的受试者和5名无PSM的受试者进行路线描绘。针刺合谷（LI 4）时，分别在温溜（LI 7）、手三里（LI 10）、曲池（LI 11）、臂臑（LI 14）和肩髃（LI 15）施加压力。在此条件下，ERG振幅的变化明显减小甚至消失。但当在上述任何一点的两侧施加压力时，ERG振幅的变化率仍明显增加。差异具有高度显著性（P<0.01）。结果表明，当使用合适的客观指标时，不仅在有显著PSM的受试者中，而且在无PSM的受试者中，针刺时体表经络路线均可被描绘出来。其路线基本与中医典籍中描述的经络路线相符。现在可以肯定地说，体表经络路线在人类中普遍存在。它为运用客观方法描绘经络路线提供了一种新途径，并为进一步应用开辟了广阔前景。
