Kubota A, Ootsuka Y, Xu T, Terui N
Institute of Basic Medical Sciences, University of Tsukuba, Ibaraki-ken, Japan.
Neurosci Lett. 1995 Aug 25;196(3):173-6. doi: 10.1016/0304-3940(95)11868-w.
Since the 10-Hz rhythmic activity in the sympathetic nerves was reported only in cats, we examined whether the activity of the same frequency could be observed in rats and rabbits as well as in the cats. Histograms of inter-burst-peak intervals of discharges of the renal nerves revealed that the 100 ms interval activity, the reverse of the 10-Hz, was observed in all the three mammals, of which the baroreceptor afferents were intact or inactivated. Further, the same frequency activity could be evoked by intermittent electrical stimulation of the dorsolateral funiculus of the cervical cord in spinal animals. It was suggested that the 10-Hz rhythmic activity in the sympathetic nerves was a common phenomenon throughout mammals and this activity was produced in the spinal cord. The physiological significance of the 10-Hz activity in the sympathetic nerves was discussed.
由于仅在猫身上报道过交感神经中的10赫兹节律性活动，我们研究了在大鼠、兔子以及猫身上是否也能观察到相同频率的活动。肾神经放电的峰间期直方图显示，在所有三种哺乳动物中均观察到了100毫秒间隔活动，这是10赫兹的反向频率，其中压力感受器传入神经完整或失活。此外，在脊髓动物中，通过间歇性电刺激颈髓背外侧索可诱发相同频率的活动。提示交感神经中的10赫兹节律性活动是所有哺乳动物中的普遍现象，且该活动在脊髓中产生。文中讨论了交感神经中10赫兹活动的生理意义。
