观察到电刺激兔脑桥中央灰质(CG)对膈神经放电的效应为:吸气相刺激主要引起吸气切断,随后的呼气相缩短;呼气相刺激主要引起呼气相缩短,随后的吸气相提前发生。CG内微量注射利多卡因对膈神经自发放电活动无影响,但使电刺激效应发生可逆性阻断。结果表明:CG参与呼吸活动的调制,但对膈神经放电活动似无紧张性影响。 The effect of electrocardiogram (CG) on the phrenic nerve discharge in the rabbit was observed as follows: inspiratory phase induced the inhalation cut-off and subsequent expiratory phase shortened; the expiratory phase mainly shortened the expiratory phase and subsequent inhalation Gas phase occurs in advance. Microinjection of lidocaine into CG has no effect on the spontaneous discharge of the phrenic nerve, but reversibly blocks the electrical stimulation effect. The results showed that: CG participates in the modulation of respiratory activity, but seems to have no effect on the activity of phrenic nerve discharge.