%0 Journal Article %T Level crossing analysis of complex physiologic time series %A M. Boorboor %A F. shahbazi %J Iranian Journal of Physics Research %D 2007 %I Isfahan University of Technology %X Level crossing is a powerful method for analyzing the random time series. In this paper by introducing this method we investigate the beta noises and represent differences between 1/f noise and white noise and also research the cardiac heart interbeat interval (RR) time series and find clear distinctions between healthy samples and samples with Congestive heart failure (CHF) disease. %K level crossing %K Congestive heart failure (CHF) %K time series %U http://ijpr.iut.ac.ir/browse.php?a_code=A-10-1-109&slc_lang=en&sid=1