Title :
Estimation of rhythmic variations in R-R interval using nonlinear energy operator during sleep
Author :
Han, Joo-Man ; Park, Hae-Jeong ; Park, Kwang Suk ; Jeong, Do-Un
Author_Institution :
Interdisciplinary Program, Seoul Nat. Univ., South Korea
fDate :
29 Oct-1 Nov 1998
Abstract :
The nonlinear energy operator (NEO) is usually used for the estimation of energy content of linear oscillator. A spike having high magnitude and high gradient appears with high value with this operation. To distinguish positive spike from negative spike, we suggest the modified nonlinear energy operator (MNEO) for the analysis of R-R interval variation during sleep. QRS complex of ECG waveform is detected with this MNEO and the statistical properties of R-R interval in each sleep state is analyzed
Keywords :
electrocardiography; feature extraction; gradient methods; mathematical operators; medical signal detection; medical signal processing; moving average processes; sleep; waveform analysis; ECG waveform; ECG waveforms; QRS complex; R-R interval; feature extraction; gradient descent method; modified operator; moving average mode; negative spike; nonlinear energy operator; positive spike; rhythmic variations estimation; sleep; spike detection; statistical properties; thresholding; Biomedical engineering; Databases; Educational institutions; Electrocardiography; Electronic mail; Engineering in medicine and biology; Frequency; Power engineering and energy; Psychology; Sleep;
Conference_Titel :
Engineering in Medicine and Biology Society, 1998. Proceedings of the 20th Annual International Conference of the IEEE
Conference_Location :
Hong Kong
Print_ISBN :
0-7803-5164-9
DOI :
10.1109/IEMBS.1998.745859
