Title :
Characterization of the cardiovascular autonomic influence through time frequency spectrum analysis
Author :
Emdin, M. ; Macerata, A. ; Varanini, M. ; Pola, S. ; Net, J. A Marin ; Taddei, A. ; Carpeggiani, C. ; Gallo, L., Jr. ; L´Abbate, A. ; Marchesi, C.
Author_Institution :
CNR, Inst. of Clinical Physiol., Pisa, Italy
Abstract :
A versatile system for power spectrum analysis using time-dependent techniques have been developed. The authors describe the capability of the Wigner-Ville (WV) time-frequency distribution to achieve a beat-to-beat characterization of the time course of the autonomic control of heart rate variability during the administration of autonomic tests in normal subjects and in patients with cardiac Chagas´ disease. To evaluate the method, different autonomic tests have been selected on the basis of the well-known behavior of the vagal-sympathetic balance, undergoing transient, sudden changes of very short duration. The WV distribution permitted achievement of full characterization of the beat-to-beat evolution
Keywords :
cardiology; haemodynamics; neurophysiology; spectral analysis; Wigner-Ville time-frequency distribution; beat-to-beat characterization; cardiac Chagas´ disease; cardiovascular autonomic influence; normal subjects; patients; power spectrum analysis; time frequency spectrum analysis; Blood pressure; Cardiac disease; Cardiology; Cardiovascular diseases; Frequency estimation; Heart rate; Signal analysis; Testing; Time frequency analysis; Time series analysis;
Conference_Titel :
Computers in Cardiology 1992, Proceedings of
Conference_Location :
Durham, NC
Print_ISBN :
0-8186-3552-5
DOI :
10.1109/CIC.1992.269367
