Decomposition of heartbeat time series: scaling analysis of the sign sequence.
The cardiac interbeat (RR) increment time series can be decomposed into two sub-sequences: a magnitude series and a sign series. The authors 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.
Ashkenazy
Y
Y
Center for Polymer Studies and Department of Physics, Boston University, Boston, MA, USA. ashkenaz@argento.bu.edu
Ivanov
P C
PC
Havlin
S
S
Peng
C K
CK
Yamamoto
Y
Y
Goldberger
A L
AL
Stanley
H E
HE
D000319:Adrenergic beta-Antagonists / Q000494:pharmacology*; D000328:Adult; D001341:Autonomic Nervous System / Q000502:physiology; D003627:Data Interpretation, Statistical; D017709:Fractals; D006339:Heart Rate / Q000187:drug effects / Q000502:physiology*; D006801:Humans; D008955:Models, Cardiovascular
D000319:Adrenergic beta-Antagonists