Title :
Time-local vagal power
Author :
Cordero, Douglas ; Reisman, Stanley ; Tapp, Walter
Author_Institution :
Neurobehavioral Unit, East Orange Veterans Adm. Med. Center, NJ, USA
Abstract :
Describes the use of complex demodulation of the cardiac inter-beat interval to derive a measure of time-local vagal power in cases where paced or controlled breathing is used. Demodulating the inter-beat interval at the frequency of paced breathing computes the amplitude of that frequency within the time series which should be a time-local measure of vagal power. Two physiological probes are used to test this method. The authors´ results support the idea that complex demodulation of inter-beat interval produces a time-local estimate of vagal power
Keywords :
cardiology; medical signal processing; neurophysiology; spectral analysis; cardiac inter-beat interval; controlled breathing; paced breathing; physiological probes; time-local estimate; time-local vagal power; Amplitude estimation; Demodulation; Fluctuations; Frequency estimation; Frequency measurement; Heart rate variability; Power measurement; Probes; Testing; Time measurement;
Conference_Titel :
Bioengineering Conference, 1996., Proceedings of the 1996 IEEE Twenty-Second Annual Northeast
Conference_Location :
New Brunswick, NJ
Print_ISBN :
0-7803-3204-0
DOI :
10.1109/NEBC.1996.503191
