21只家兔,乌拉坦麻醉后,电刺激延髓腹侧表面加压区,均表现肾交感神经电活动和动脉血压的兴奋性反应,谷氨酸(L-Glutamate)局部作用的反应与电刺激一致,红藻氨酸(Kainic acid)做局部功能损毁时,先期表现与电刺激近似的兴奋性反应,后期肾交感神经电活动减弱,动脉压下降至脊髓动物水平。提示家兔延髓腹侧表面加压区的神经元结构是心血管交感紧张性活动的重要中枢来源。 Twenty-one rabbits and urethane anesthetized, electrically stimulated the medulla oblongata surface pressure zone, all showed the excitatory response of renal sympathetic and arterial blood pressure, the response of local action of L-glutamate and electrical stimulation Consistent, Kainic acid local function damage, the initial performance and electrical stimulation similar to the excitatory response, late renal sympathetic nerve activity weakened, arterial pressure dropped to spinal cord animal level. It is suggested that the neuron structure of the rabbit ventrolateral medullary pressure zone is an important central source of cardiovascular sympathetic tone activity.