TY - GEN
T1 - Resonances in the cardiovascular system
T2 - 3rd International Conference on Bio-inspired Systems and Signal Processing, BIOSIGNALS 2010
AU - Vaschillo, Evgeny G.
AU - Vaschillo, Bronya
AU - Buckman, Jennifer F.
AU - Bates, Marsha E.
AU - Pandina, Robert J.
PY - 2010
Y1 - 2010
N2 - The baroreflex, as a control system with negative feedback, is a mechanism that buffers changes in blood pressure (BP), thereby precluding strong, abrupt shifts in arterial pressure. As a closed-loop control system with delays, the baroreflex possesses resonance features at frequencies of about 0.1 and 0.03 Hz. These resonance frequencies correspond to a ∼5-s delay in the BP response to changes in heart rate (HR) (HR baroreflex closed-loop) and a ∼15-s delay in the vascular tone (VT) response to changes in BP (VT baroreflex closed-loop). Thus, whereas a single impact on the cardiovascular system (CVS) elicits a HR, BP, and VT oscillatory response that fades over time, 0.1 or 0.03 Hz rhythmical stimulation of the CVS produces steady HR, BP, and VT oscillations with significantly higher amplitudes comparing to stimulation at other frequencies. Resonances in the baroreflex system are essential for the maintenance of optimal health by keeping autonomic regulation active via HR, BP, and VT variability, providing adaptive responses to internal and external stimuli, and buffering stress and emotional reactivity via inhibitory effect in the brain. This study investigates the phenomenon of resonances in the CVS and the ability to employ these resonances for clinical applications.
AB - The baroreflex, as a control system with negative feedback, is a mechanism that buffers changes in blood pressure (BP), thereby precluding strong, abrupt shifts in arterial pressure. As a closed-loop control system with delays, the baroreflex possesses resonance features at frequencies of about 0.1 and 0.03 Hz. These resonance frequencies correspond to a ∼5-s delay in the BP response to changes in heart rate (HR) (HR baroreflex closed-loop) and a ∼15-s delay in the vascular tone (VT) response to changes in BP (VT baroreflex closed-loop). Thus, whereas a single impact on the cardiovascular system (CVS) elicits a HR, BP, and VT oscillatory response that fades over time, 0.1 or 0.03 Hz rhythmical stimulation of the CVS produces steady HR, BP, and VT oscillations with significantly higher amplitudes comparing to stimulation at other frequencies. Resonances in the baroreflex system are essential for the maintenance of optimal health by keeping autonomic regulation active via HR, BP, and VT variability, providing adaptive responses to internal and external stimuli, and buffering stress and emotional reactivity via inhibitory effect in the brain. This study investigates the phenomenon of resonances in the CVS and the ability to employ these resonances for clinical applications.
KW - Baroreflex
KW - Closed-loop control system
KW - HRV biofeedback
KW - Resonance frequency
UR - http://www.scopus.com/inward/record.url?scp=77956447211&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77956447211&partnerID=8YFLogxK
M3 - Conference contribution
SN - 9789896740184
T3 - BIOSIGNALS 2010 - Proceedings of the 3rd International Conference on Bio-inpsired Systems and Signal Processing, Proceedings
SP - 21
EP - 28
BT - BIOSIGNALS 2010 - Proceedings of the 3rd International Conference on Bio-inpsired Systems and Signal Processing
Y2 - 20 January 2010 through 23 January 2010
ER -