循经感传过程中外周激发动因存在的初步证明

对循经感传的机理,长期以来就存在着“中枢兴奋扩散”和“外周动因激发”两种不同的观点。在总结既往工作的基础上,1987年我们又提出了“以外周循经过程为主导的外周中枢统一论”的假说。强调在循经感传的形成过程中,“外周”和“中枢”是不可分割的整体,但起决定作用的是外周的实质过程。本文以电生理学方法,在感传过程中,直接从相应的感觉神经上记录到了与感传同步的传入神经放电,为外周激发动因的存在提供了初步的证明,对阐明循经感传的机理有重要的意义。

EVIDENCES FOR THE APPEARANCE OF PERIPHERAL ACTIVATOR DURING THE ADVANCE OF PSM

Investigation on mechanism underlying the formation of the propagated sensa- tion along meridians (PSM) is one of the important problems in meridian resea- rch.In order to interpret the problem more satisfactorily,we had advanced a hypothesis in 1987,that is,‘integration of periphery’ and CNS under the domination of substantial process proceeding along the meridians”.According to this hypothesis, “periphery” and “central mechanism” are operated as a whole.However,it also emphasized that the peripheral substantial process is the determinant factor in the formation of PSM.And then,is there really a peripheral substantial process,or, in other word,a peripheral activator during the advance of PSM.The afferent discharges were directly led from the superficial branch of radial nerve.Nineteen volunteers with marked PSM were under observation.The preliminary results demonstrated that as PSM,evoked by stimulating Jianyu (LI15) or Ying Xiang Acupoint (LI20),travelled along the course of Large Intestine Meridian to the hand or index finger,the corresponding afferent impulses could be recorded from that nerve branch in a part of experiments.Through a series of control obse- rvations,it has been proved that the impulses recorded was not resulted from other responses,but really the afferent impulse discharged by the neuroreceptor apparatus distributing along the meridian,which was activated by certain stimu- lation.The facts demonstrated that “the peripheral activator” really appeared during the advance of PSM.It is of significance for the investigation on the mechanism underlying the formation of PSM.