Title :
Nonlinear analysis of photo-plethysmographic signals obtained during rest and step-climbing exercises
Author :
Yan, Y.S. ; Zhang, Y.T.
Author_Institution :
Dept. of Electron. Eng., Chinese Univ. of Hong Kong, Shatin, China
Abstract :
We applied the method of surrogate data to detect the nonlinearity embedded in the signal of blood volume pulsation during rest and step-climbing exercises. It was found that the observed data during rest is significantly inconsistent with the hypothesis of a stationary, possibly rescaled, linear Gaussian noise, while the significance was obviously weakened during exercise.
Keywords :
Gaussian noise; biomechanics; blood; correlation methods; medical signal processing; plethysmography; sleep; statistical analysis; blood volume pulsation; correlation; linear Gaussian noise; photoplethysmographic signals; step-climbing exercises; surrogate data; surrogate data method; Blood; Cardiovascular system; Data analysis; Delay estimation; Design for experiments; Gaussian noise; Iterative algorithms; Signal analysis; Statistical analysis; Testing;
Conference_Titel :
Biomedical Engineering, 2003. IEEE EMBS Asian-Pacific Conference on
Print_ISBN :
0-7803-7943-8
DOI :
10.1109/APBME.2003.1302645
