[The periodic components of the integral tonic activity of the sympathetic nerves].
Sympathetic spontaneous activity in peripheral nerves of limbs and activity of C-fibres of the cervical sympathetic nerve trunk (CSNT) were recorded in situ from anaesthetized rabbits using multichannel coherent recording technique. Spectral characteristics of the activity and correlation between nerve activity and blood pressure were estimated. The data obtained have suggested that C-fibres in the CSNT are mainly vasoconstrictor fibres and their activity is more baroreceptor-dependent than that of sympathetic fibres in peripheral nerves. It is found that latencies of changes in the arterial blood pressure in response to changes in sympathetic activity are between 4 and 10 s.
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D000818:Animals; D004558:Electric Stimulation; D004566:Electrodes; D008475:Median Nerve / Q000502:physiology; D009333:Neck / Q000294:innervation; D009412:Nerve Fibers / Q000502:physiology; D010507:Periodicity; D011311:Pressoreceptors / Q000502:physiology; D011817:Rabbits; D011930:Reaction Time / Q000502:physiology; D013564:Sympathetic Nervous System / Q000502:physiology*; D013979:Tibial Nerve / Q000502:physiology; D014661:Vasoconstriction / Q000502:physiology
Periodicheskie sostavliaiushchie integral'noĭ tonicheskoĭ aktivnosti simpaticheskikh nervov.