Poincare plot interpretation using a physiological model of HRV based on a network of oscillators
Poincare plot interpretation using a physiological model of HRV based on a network of oscillators
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DOI：
10.1152/ajpheart.00405.2000
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发表时间：
2002-11-01
影响因子：
4.8
通讯作者：
Kamen, P
中科院分区：
文献类型：
--
作者：
Brennan, M;Palaniswami, M;Kamen, P
在这篇文章中，我们建立了一个生理振子模型，其输出模拟R-R区间Poincare图的形状。为了验证该模型，对各种神经状况的模拟与在每种规定条件下从受试者获得的心率变异性(HRV)数据进行了比较。对于各种交感迷走神经平衡，我们的模型生成的Poincare图与实际R-R间期的变化非常相似。利用我们模型的振子基础，通过模拟和分析结果，详细说明了窦房结的低频和高频调制转化为R-R间期Poincare图形状的方式。利用我们的模型，我们建立了庞加莱曲线的长度和宽度是低频功率和高频功率的加权组合。这提供了频域频谱分析技术和时域庞加莱曲线图分析之间的理论联系。我们通过测试一组数据的数学关系来确定这些原则在多大程度上适用于实际的R-R间期，并确定这些原则在实际的HRV记录中是显而易见的。
In this paper, we develop a physiological oscillator model of which the output mimics the shape of the R-R interval Poincare plot. To validate the model, simulations of various nervous conditions are compared with heart rate variability (HRV) data obtained from subjects under each prescribed condition. For a variety of sympathovagal balances, our model generates Poincare plots that undergo alterations strongly resembling those of actual R-R intervals. By exploiting the oscillator basis of our model, we detail the way that low- and high-frequency modulation of the sinus node translates into R-R interval Poincare plot shape by way of simulations and analytic results. With the use of our model, we establish that the length and width of a Poincare plot are a weighted combination of low- and high-frequency power. This provides a theoretical link between frequency-domain spectral analysis techniques and time-domain Poincare plot analysis. We ascertain the degree to which these principles apply to real R-R intervals by testing the mathematical relationships on a set of data and establish that the principles are clearly evident in actual HRV records.