TY - JOUR
T1 - Simple model of the aging effect in heart interbeat time series
AU - Guzmán-Vargas, L.
AU - Angulo-Brown, F.
PY - 2003
Y1 - 2003
N2 - In this work, we calculate the fractal dimension of heart interbeat time series of some healthy young and elderly individuals. As has been found by means of other methods (detrended fluctuation and spectral analyses), we also find that interbeat series of healthy young subjects can be characterized by only one scaling exponent and a crossover behavior in it is observed with aging. By means of a zoom over the hinges of the crossover region, interesting effects of aging are presented. Our results with real interbeat time series are reasonably reproduced by using a simple model based on combinations of noisy first-order autoregressive series.
AB - In this work, we calculate the fractal dimension of heart interbeat time series of some healthy young and elderly individuals. As has been found by means of other methods (detrended fluctuation and spectral analyses), we also find that interbeat series of healthy young subjects can be characterized by only one scaling exponent and a crossover behavior in it is observed with aging. By means of a zoom over the hinges of the crossover region, interesting effects of aging are presented. Our results with real interbeat time series are reasonably reproduced by using a simple model based on combinations of noisy first-order autoregressive series.
UR - http://www.scopus.com/inward/record.url?scp=85016291971&partnerID=8YFLogxK
U2 - 10.1103/PhysRevE.67.052901
DO - 10.1103/PhysRevE.67.052901
M3 - Artículo
C2 - 12786205
SN - 1063-651X
VL - 67
SP - 4
JO - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
JF - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
IS - 5
ER -