Title :
Bidirectional augmentation of dynamic heart rate regulation by the autonomic nervous system
Author :
Sugimachi, Masaru ; Kawada, Toru ; Ikeda, Yasuhiro ; Yamazaki, Toji ; Sunagawa, Kenji
Author_Institution :
Dept. of Cardiovascular Dynamics, Nat. Cardiovascular Center Res. Inst., Osaka, Japan
fDate :
31 Oct-3 Nov 1996
Abstract :
To characterize dynamic interaction between sympathetic and vagal heart rate control, the authors estimated linear transfer function from stimulation frequency to heart rate in the presence of various patterns of the stimulation of the other nerve. The gain of the transfer function increased by 80.7±50.5% when 10 Hz tonic vagal stimulation accompanied white noise sympathetic stimulation. The gain was augmented by 24.1±18.0% when 10 Hz tonic sympathetic stimulation accompanied white noise vagal stimulation. During simultaneous white noise stimulation, the gain was larger than that predicted by individual stimulation. The authors conclude that heart rate regulation is augmented bidirectionally and serves to enhance heart rate regulation under physiological conditions
Keywords :
biocontrol; cardiology; neurophysiology; white noise; 10 Hz; autonomic nervous system; bidirectional augmentation; dynamic heart rate regulation; linear transfer function; physiological conditions; stimulation frequency; sympathetic heart rate control; vagal heart rate control; white noise sympathetic stimulation; Animals; Autonomic nervous system; Cardiology; Control systems; Frequency estimation; Heart rate; Nervous system; Resonant frequency; Transfer functions; White noise;
Conference_Titel :
Engineering in Medicine and Biology Society, 1996. Bridging Disciplines for Biomedicine. Proceedings of the 18th Annual International Conference of the IEEE
Conference_Location :
Amsterdam
Print_ISBN :
0-7803-3811-1
DOI :
10.1109/IEMBS.1996.647562
