Title :
Time-frequency analysis of heart rate variability using complex discrete wavelet transform
Author :
Shimazu, Mikio ; Ojima, Shuichi ; Takasugi, Shin-Ichiro ; Nejime, Teturo ; Kamishima, Takahide
Author_Institution :
Kyushu Multimedia Syst. Res. Lab., Matsushita Electr. Ind. Co. Ltd., Fukuoka, Japan
Abstract :
We proposed here a new wavelet-based approach for Heart Rate Variability (HRV) analysis. In order to obtain the correct power for the LF and HF bands in the HRV signal, we decomposed the signal by the complex discrete wavelet transform (CDWT) and calculated the power by the square moduli of CDWT complex-valued components. We confirmed the effectiveness of our method by applying it to simulation data (sine wave) and experimental data
Keywords :
biocontrol; cardiovascular system; discrete wavelet transforms; medical signal processing; neurophysiology; time series; time-frequency analysis; CDWT complex-valued components; HF band; HRV time series; LF band; autonomic nervous system activity; complex discrete wavelet transform; heart rate variability; simulation data; sine wave; time-frequency analysis; Autonomic nervous system; Discrete wavelet transforms; Gabor filters; Hafnium; Heart rate; Heart rate variability; Laboratories; Multimedia systems; Time frequency analysis; Wavelet 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.1999.804112
