Coupling of arterial pulse and 10-Hz rhythm in sympathetic nerve discharge.
We used time series analysis to characterize the relationships among the arterial pulse (AP) and the cardiac-related and 10-Hz rhythms in sympathetic nerve discharge (SND) of urethane-anesthetized cats. We found that 10-Hz activity was more tightly coupled to the AP than to the cardiac-related rhythm. These data support the view that the dynamic coupling of AP and the 10-Hz rhythm in SND involves a direct influence of baroreceptor activity on the 10-Hz oscillator.
Larsen
P D
PD
Department of Pharmacology and Toxicology, Michigan State University, East Lansing, MI 48824-1317, USA. larsenpr@msu.edu
Zhong
S
S
Lewis
C D
CD
Gebber
G L
GL
Barman
S M
SM
D000818:Animals; D001158:Arteries / Q000502:physiology*; D002415:Cats; D004594:Electrophysiology; D006321:Heart / Q000502:physiology; D009991:Oscillometry; D010507:Periodicity; D011311:Pressoreceptors / Q000502:physiology; D011674:Pulse; D013564:Sympathetic Nervous System / Q000502:physiology*