有资料证明,针刺的镇痛作用是不同的感觉传入信号在中枢神经系统内相互作用的结果。也就是说,从针刺部位传入的信号和从痛源部位传入的信号,在中枢神经系统内通过复杂的相互作用,使痛觉信号受到抑制,因而产生消除或缓解疼痛的效果。至于这两个来源的神经信号在痛觉传入的各级中枢是经过什么方式产生镇痛作用的,目前还不很清楚。而这个问题却是解释针麻原理的一个重要环节,也是探索提高临床针麻效果的途径之一。 There is evidence that the analgesic effect of acupuncture is the result of different sensory afferent signals interacting within the central nervous system. That is to say, the signal transmitted from the acupuncture point and the signal transmitted from the painful source site inhibit the pain signal through complex interaction in the central nervous system, thus resulting in the effect of eliminating or relieving pain. As for the neural signals of these two sources in the analgesic at all levels of the central nervous system through which way has analgesic effect, it is not yet clear. However, this issue is an important part of explaining the principle of acupuncture anesthesia and one of the ways to explore the effect of acupuncture anesthesia.