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在兔延髓中缝隐核（ＮＲＯ）区用玻璃微电极引导单位放电３８３个，放电较均匀，多数幅度中等，部分放电高大，约半数的放电频率较低，均频５．４±０．３Ｈｚ，其中８．１％（３１个）的放电与呼吸节律一致。针刺“人中”穴和将兔窒息分别使８６％（４２／４９）和５４．１％（５３／９８）的放电出现反应，针刺“人中”穴和使兔窒息均在部分紧张性单位放电诱发出呼吸节律。电刺激脑桥臂旁内侧核（ＮＰＢＭ）使５７．６％（４９／８５）的单位放电出现反应，且低频放电主要表现兴奋。表明ＮＲＯ内含有一定量的呼吸相关神经元，针刺“人中”穴可部分通过改变ＮＲＯ神经元的活动发挥作用，ＮＲＯ与ＮＰＢＭ之间可能存在较直接的联系。＊Ｐ＜０．００１电均匀而稀疏，吸气性放电不呈递增型，与吸气前运动神经元放电形式不同；（３）对窒息较敏感，呈兴奋性反应。延髓内的呼吸相关神经元主要集中在背侧和腹侧呼吸组，但在其他区域也呈散在分布［５］。ＮＲＯ内的呼吸相关神经元数量不多，不呈集中分布之势。许多实验表明，针刺“人中”穴对呼吸有重要影响［６］，而针刺效应与延髓中缝核群的活动有着密切的关系［７］。我们观察到针刺“人中”穴可使呼吸兴奋，呼吸频幅均增。针刺“人中”穴使大多数ＮＲＯ?
In the rabbit medulla oblongata (NRO) area, 383 cells were guided by glass microelectrode, the discharge was more uniform, most of the amplitude was moderate, some of the discharges were large and about half of them were discharged at a frequency of 5.4 ± 0.3Hz, Of these, 8.1% (31) of the discharges coincided with the respiratory rhythm. Acupuncture at “Renzhong” acupoints and asphyxia in rabbits caused discharges in 86% (42/49) and 54.1% (53/98) respectively. Some acupuncture acupuncture at “Renzhong” Sexual unit discharge induced respiratory rhythm. Electrical stimulation of NPBM caused 57.6% (49/85) units to discharge, and low frequency discharge mainly showed excitement. It shows that there are a certain amount of respiratory related neurons in NRO. Acupuncture of “human middle” acupoints can partly play a role by changing the activity of NRO neurons. There may be a more direct relationship between NRO and NPBM. * P <0.001 electrically uniform and sparse, aspirated discharge does not appear ascending type, and before inhalation motor neuron discharge in different forms; (3) more sensitive to asphyxiation, was excitatory response. Respiratory related neurons in medulla oblongata mainly concentrated in the dorsal and ventral respiratory groups, but also scattered in other regions [5]. There are not many respiratory-related neurons in the NRO, which are not concentrated. Many experiments show that acupuncture at “Renzhong” acupoints has an important effect on respiration [6], and the acupuncture effect has a close relationship with the activity of the medullary nucleus in the medulla oblongata [7]. We observed acupuncture “in” hole can make breathing excited, respiratory rate increased. Acupuncture “people in the hole” so that most of the NRO?