Title :
Time-frequency analysis of the heart-rate variability during physical and physical-pharmacological tests
Author :
Dehkordi, Mohammed ; Erfanian, Abbas ; Foroutan, Abbas
Author_Institution :
Dept. of Biomed. Eng., Iran Univ. of Sci. & Technol., Tehran, Iran
Abstract :
This paper presents the time-frequency analysis of the heart-rate variability (HRV) during the tilt test, the Valsalva maneuver, and controlled breathing. The tests were carried out both with and without dicyclomine hydrochloride which is an anticholinergic drug. In this paper, the authors employ the short-time Fourier transform (STFT), the Wigner-Ville distribution (WD), and Choi-Williams distribution (CWD) to characterize the HRV. They also compare the performance of these methods in applications to HRV
Keywords :
Fourier transforms; Wigner distribution; cardiology; medical signal processing; time-frequency analysis; Choi-Williams distribution; Valsalva maneuver; Wigner-Ville distribution; anticholinergic drug; controlled breathing; dicyclomine hydrochloride; heart-rate variability; physical tests; physical-pharmacological tests; short-time Fourier transform; tilt test; Autonomic nervous system; Chirp; Drugs; Fourier transforms; Hafnium; Heart rate variability; Medical tests; Spectrogram; Testing; Time frequency analysis;
Conference_Titel :
[Engineering in Medicine and Biology, 1999. 21st Annual Conference and the 1999 Annual Fall Meetring of the Biomedical Engineering Society] BMES/EMBS Conference, 1999. Proceedings of the First Joint
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-5674-8
DOI :
10.1109/IEMBS.1999.802327
