我们以往的工作表明,低频、低强度方波刺激腓深神经可以抑制由刺激下丘脑引起的期前收缩,这种抑制作用很可能是通过抑制心交感中枢紧张性来实现的。本工作拟分析缓冲神经在刺激下丘脑诱发期前收缩中的作用。实验在43只乌拉坦(350毫克/公斤)和氯醛糖(18毫克/公斤)麻醉家兔进行。 Our previous work showed that the stimulation of the deep peroneal nerve with low frequency and low intensity square wave can inhibit premature contractions induced by the stimulation of the hypothalamus. This inhibition may be achieved by inhibiting the central nervous system sympathetic tone. This work intends to analyze the role of the buccal nerve in stimulating the contraction of the hypothalamus before induction. Experiments were performed in 43 urethane (350 mg / kg) and aldose (18 mg / kg) anesthetized rabbits.