电刺激穴位诱发内脏神经反射电活动的分析

<正> 我们过去的工作表明,针刺体表穴位能改变内脏神经传出电活动并影响相关脏器的活动,并见到这种作用具有一定的特异性,近代生理学研究证实,躯体内脏反射(Somato-Viseral Reflex)是针刺以及其他各种物理刺激引起内脏活动变化的主要基础。躯体交感反射(Somato-Sympathetic Reflex)是一种主要的躯体内脏反射,近年来国外许多学者对它进行了研究,为了探讨体表与内脏联系,我们在动物上应用电刺激穴位诱发躯体内脏反射的方法研究了刺激与这种反射的关系及特性,以及改变中枢机能状态对反射的影响,现将结果报道如下。

AN ANALYSIS OF THE VISCERAL REFLEX ACTIVITY INDUCED BY ELECTROACUPUNCTURE OF POINT

The characteristics of sympathetic reflex induced by electroacupuncture of "Zusali" acupoint and record ed from the postganglionic sympathe- splanchnic nerve were studied in 38 rabbits. The results may be summarized as follows: 1. The sympathetic reflex potential induced by electroacupuncture consi- sted of excitatory phase followed by inhibitory phase. Considerable varia- bility and individual difference in this reflex phases were observed. 2. Both the excitatory and inhibitory phases were increased with the augmentation of intensity, friquency and duration of the electro-stimulus. 3. The effect induced by stimulation also varied with the intensity applied to the same acupoint and the combination of various acupoints. It was found that variation in stimulus quantity and acupuncture points may show coresponding different effects. 4. Increase of the excitability of medullary centers by blocking the carotid artery and injecting Pentylentetrazolum strengthened the reflex in- duced by electroacupuncture, although some difference between these two kinds of effects was noticed. It is thus assumed that the variabllity of the Points-stimulation in- duced visceral reflex observed in our experiment may be responsible for the unstable needling effect in clinical practice. The medullary reticular formation is supposed to be the center of visceral refflex also the site of integration of somatic stimulation on this reflex.