Baroreceptor influences on cardiac-related sympathetic nerve activity

Shaun F. Morrison, Susan M. Barman, Gerard L. Gebber

Research output: Contribution to journalArticle

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Abstract

We studied the effect of a dropped ventricular beat (i.e. loss of one cycle of pulse synchronous baroreceptor nerve activity) on the centrally generated 2-6 Hz oscillation in postganglionic symphathetic nerve discharge (SND) in cats anesthetized with Dial-urethane. The results indicate that in each cardiac cycle baroreceptor nerve activity can: (1) decrease the rate of recruitment and number of postganglionic fibers that become active and (2) advance the onset of central inhibition responsible for the abrupt decline of SND. These effects are independent of baroreceptor-mediated entrainment of the 2-6 Hz oscillation of SND to the cardiac cycle.

Original languageEnglish (US)
Pages (from-to)175-178
Number of pages4
JournalBrain research
Volume301
Issue number1
DOIs
StatePublished - May 28 1984

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Keywords

  • baroreceptor mechanisms
  • cardiac-related neural oscillation
  • dropped ventricular beat
  • phase relationship
  • sympathetic nerve discharge

ASJC Scopus subject areas

  • Neuroscience(all)
  • Molecular Biology
  • Clinical Neurology
  • Developmental Biology

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