Title :
Evaluation of two detrending techniques for application in Heart Rate Variability
Author :
Shafqat, K. ; Pal, S.K. ; Kyriacou, P.A.
Author_Institution :
City Univ., London
Abstract :
The performance of two different algorithms of detrending the RR-interval before Heart Rate Variability (HRV) analysis has been evaluated using both, simulated signals and real RR-interval time series. The first algorithm is based on the smoothness prior approach (SPA) and the second algorithm is implemented using wavelet packet (WP) analysis. The calculated time and frequency domain parameters obtained from real signals after detrending and the results obtained from simulated signals suggest that the WP method performed better than the SPA. The WP method provided more attenuation of the slow varying trend and was able to preserve the other signal components better than the SPA method. Also the SPA method was computationally slower and it might be not appropriate with long signals.
Keywords :
bioelectric phenomena; electrocardiography; frequency-domain analysis; medical signal processing; time series; time-domain analysis; wavelet transforms; HRV analysis; RR-interval time series; detrending techniques; frequency domain parameters; heart rate variability; smoothness prior approach; time domain parameters; wavelet packet analysis; Algorithm design and analysis; Analytical models; Computational modeling; Frequency domain analysis; Heart rate variability; Performance analysis; Signal analysis; Time series analysis; Wavelet analysis; Wavelet packets; Algorithms; Computer Simulation; Heart Rate; Humans; Models, Cardiovascular; Signal Processing, Computer-Assisted;
Conference_Titel :
Engineering in Medicine and Biology Society, 2007. EMBS 2007. 29th Annual International Conference of the IEEE
Conference_Location :
Lyon
Print_ISBN :
978-1-4244-0787-3
DOI :
10.1109/IEMBS.2007.4352275