2002/09/02 by Paolo Allegrini, Rita Balocchi, Allegrini, Paolo +9
Biochemistry, Genetics and Molecular Biology · Physics and Astronomy · #FOS: Biological sciences #FOS: Physical sciences #Quantitative Biology (q-bio) #Soft Condensed Matter (cond-mat.soft) #cond-mat.soft #q-bio
paper · pdf · doi:10.48550/arxiv.cond-mat/0209035
Conference ISMDA Rome, 10 and 11 OCTOBER 2002. will appear on Lecture Notes on Computer Science
arxiv created 2002/09/02 · arxiv updated 2009/11/30
We analize heartbeat time-series corresponding to several groups of individuals (healthy, heart transplanted, with congestive heart failure (CHF), after myocardial infarction (MI), hypertensive), looking for short- and long-time statistical behaviors. In particular we study the persistency patterns of interbeat times and interbeat-time variations. Long-range correlations are revealed using an information-based technique which makes a wise use of the available statistics. The presence of strong long-range time correlations seems to be a general feature for all subjects, with the exception of some CHF individuals. We also show that short time-properties detected in healthy subjects, and seen also in hypertensive and MI patients, and completely absent in the trasplanted, are characterized by a general behavior when we apply a proper coarse-graining procedure for time series analysis.