Guowei L, Rongzhao L, Jingqiang X, Yuanshen W, Guorui H
Sci Sin. 1979 Jun;22(6):680-92.
Needling acupuncture point zusanli shows a significant suppressive effect characterized by the response of jaw movement. The afferent analgesic impulses arising from the point zusanli for producing this effect are transmitted largely by A beta gamma fibers in the peroneal nerve. Sufficient amount of A beta gamma fibers brought in to action is an important factor in achieving this prominent analgesic effect. The inhibitory action of the large fibers, such as A beta gamma, mediating analgesic impulses upon the small fibers such as A delta and C, carrying painful impulses, seems to be one of the component parts of the mechanism of acupuncture analgesia.
针刺足三里穴可产生以颌部运动反应为特征的显著抑制效应。产生这种效应的来自足三里穴的传入镇痛冲动主要由腓神经中的Aβγ纤维传导。调动足够数量的Aβγ纤维发挥作用是实现这种显著镇痛效果的一个重要因素。诸如Aβγ等传导镇痛冲动的粗纤维对诸如Aδ和C等传导疼痛冲动的细纤维的抑制作用，似乎是针刺镇痛机制的组成部分之一。
