%0 Journal Article
	%A Yue-Der Lin and  Wei-Ting Liu and  Ching-Che Tsai and  Wen-Hsiu Chen
	%D 2009
	%J International Journal of Electrical and Computer Engineering
	%B World Academy of Science, Engineering and Technology
	%I Open Science Index 29, 2009
	%T Coherence Analysis between Respiration and PPG Signal by Bivariate AR Model
	%U https://publications.waset.org/pdf/1231
	%V 29
	%X PPG is a potential tool in clinical applications. Among such, the relationship between respiration and PPG signal has attracted attention in past decades. In this research, a bivariate AR spectral estimation method was utilized for the coherence analysis between these two signals. Ten healthy subjects participated in this research with signals measured at different respiratory rates. The results demonstrate that high coherence exists between respiration and PPG signal, whereas the coherence disappears in breath-holding experiments. These results imply that PPG signal reveals the respiratory information. The utilized method may provide an attractive alternative approach for the related researches.

	%P 1168 - 1173