High frequency (00Hz, 0.ms) but not low frequency (Hz, 0.ms) stimulation for 0min produced an immediate spasmolytic eff观察结果如下 : 高频 ( 0 0Hz)刺激 0分钟具有明显的即时解痉效果 ,而低频 (Hz)刺激解痉疗效不佳 ;