Romaniuk J R, Budzińska K
Acta Neurobiol Exp (Wars). 1986;46(2-3):131-40.
The effect of midsagittal lesions of the medulla on the phrenic nerve output and the central transmission of the vagal input were studied. The rabbits were anaesthetized with a mixture of chloralose with urethane, paralysed and artificially ventilated. Both vagi were sectioned in the neck and one of them was prepared for electrical stimulation of its proximal end. Lesions of the medulla were performed in steps and at each stage the short-latency phrenic response to a single electrical shock applied to the vagus was studied. The results indicate that, at the levels 1 to 5 mm rostra1 to the obex and 3 mm in depth from the dorsal medullary surface, there is a maximal density of crossing connections important for transmission of the descending respiratory activity, synchronization of the respiratory activity generated by left and right part of the medulla and transmission of the vagal signal.
研究了延髓矢状正中病变对膈神经输出及迷走神经输入的中枢传导的影响。用氯醛糖与乌拉坦的混合物麻醉家兔，使其麻痹并进行人工通气。在颈部切断双侧迷走神经，其中一侧准备用于电刺激其近端。逐步进行延髓病变，在每个阶段研究对迷走神经施加单次电击时膈神经的短潜伏期反应。结果表明，在闩前方1至5毫米、距延髓背表面3毫米深度的水平，存在对下行呼吸活动的传导、延髓左右部分产生的呼吸活动的同步以及迷走神经信号的传导至关重要的交叉连接的最大密度。
