2001/02/27 by Y. Ashkenazy, P. Ch. Ivanov, S. Havlin +4
Physics and Astronomy · Biochemistry, Genetics and Molecular Biology · #cond-mat.stat-mech #q-bio
published as Computers in Cardiology 2000; 27:139-143 (conference proceedings) · 4 pages, latex
arxiv created 2001/02/27 · arxiv updated 2009/11/30
The cardiac interbeat (RR) increment time series can be decomposed into two sub-sequences: a magnitude series and a sign series. We show that the sign sequence, a simple binary representation of the original RR series, retains fundamental scaling properties of the original series, is robust with respect to outliers, and may provide useful information about neuroautonomic control mechanisms.