为了进一步证明外周神经末梢的兴奋传递,在蛙背“膀胱经”皮神经标本上,用单纤维记录法,刺激一条应神经外周端,发现在部分单纤维上可引导出动作电位.动作电位出现率与记录神经的距离有关,刺激与记录神经之距越近越易引出。用P物质处理后,刺激引起的动作电位频率明显增加. In order to further prove the excitatory transmission of peripheral nerve endings, a single fiber recording method was used to stimulate the peripheral nerve end of a nerve on the frog’s back “bladder meridian” nerve branch to find out that the action potentials can be induced on some single fibers. The rate and the recording of nerve distance, stimulation and record the closer the more easily lead to nerve. Substance P treatment, the stimulus-induced action potential frequency increased significantly.