Simple model of the aging effect in heart interbeat time series.
Simple model of the aging effect in heart interbeat time series.
复制标题
心跳间隔时间序列中老化效应的简单模型。
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
F. Angulo
中科院分区：
文献类型：
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作者：
L. Guzmán;F. Angulo
在这项工作中，我们计算了一些健康的年轻人和老年人心脏跳动时间序列的分维。正如已经发现的其他方法（去趋势波动和频谱分析），我们还发现，健康的年轻人的interbeat系列只能用一个标度指数和交叉行为，它与年龄的观察。通过放大的铰链的交叉区域，有趣的老化的影响。我们的结果与真实的interbeat时间序列合理地再现使用一个简单的模型的基础上的组合的噪声一阶自回归序列。
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.