Nonlinear noise reduction for electrocardiograms.
Nonlinear noise reduction for electrocardiograms.
复制标题
心电图非线性降噪。
作者：
T. Schreiber;D. T. Kaplan
心脏的电活动通常表现出既不是周期性的也不是确定性混沌的动力学行为：心跳间隔似乎包含随机分量。虽然长期预测因此是不可能的，但可以对小于一个心脏周期的时间进行良好的预测。这一事实是用来抑制测量误差的局部几何投影方法，最初开发的混沌信号。结果构成的证据表明，基于混沌理论的时间序列分析技术可以是有用的，尽管事实上，很少有自然现象已被确定为混沌。(c)1996年美国物理学会。
The electrical activity of the heart usually shows dynamical behavior which is neither periodic nor deterministically chaotic: The interbeat intervals seem to contain a random component. Although long term predictions are thus impossible, good predictions can be made for times smaller than one heart cycle. This fact is used in order to suppress measurement errors by a local geometric projection method which was originally developed for chaotic signals. The result constitutes evidence that techniques of time series analysis based on chaos theory can be useful despite the fact that very few natural phenomena have been actually established to be deterministically chaotic. (c) 1996 American Institute of Physics.