为了研究电起搏器对失神经后不同时期环杓后肌的作用,我们选用14只狗分为喉返神经切断及吻合两组,分别在手术后即刻、2周、1、2、4、8、12个月进行观察,结果发现在神经切断及吻合即刻环杓后肌电刺激强度阈值较低(2伏),2周后达最高峰(7～10伏),4个月后,神经吻合组恢复到最初水平,神经切断组维持在6伏左右,并发现随病程延长环杓后肌萎缩加重.因此,电起搏器一定刺激强度在一定时间内对恢复萎缩环杓后肌的功能是有效的. In order to study the effect of pacemakers on the posterior ring scaphoid muscles in different periods after denervation, we selected 14 dogs to be divided into 2 groups: anterior recurrent laryngeal nerve and anastomosis, Eight and 12 months later, we found that the threshold value of electromyostimulation intensity was 2 volts after ciclophomyctomy and anastomosis, and reached its peak (7-10 volts) after 2 weeks. After 4 months, the nerve anastomosis group Restoration to the initial level, the nerve cut-off group remained at about 6 volts, and found that with the extension of the disease after prolonged ring muscle atrophy aggravated. Therefore, the pacemaker certain stimulus intensity in a certain period of time to restore crescentic muscle function is effective of.