The effect of low-frequency oscillations on cardio-respiratory synchronization: Observations during rest and exercise.
The effect of low-frequency oscillations on cardio-respiratory synchronization: Observations during rest and exercise.
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DOI：
10.1140/epjb/e2008-00199-4
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发表时间：
2008-10
期刊：
影响因子：
--
通讯作者：
McClintock PV
中科院分区：
文献类型：
--
作者：
Kenwright DA;Bahraminasab A;Stefanovska A;McClintock PV
我们表明，心肺系统中紧密同步顺序之间发生的转变主要是由于低频分量对心脏和呼吸过程的调制。实验证据来自健康受试者休息和运动期间的记录。运动作为系统的扰动，改变平均心脏频率和呼吸频率，并通过低频振荡改变其调制量。该结论得到了基于相位耦合振荡器模型（具有白噪声和低频噪声）的数值证据的支持。实验和数值方法都证实低频振荡在接近的同步顺序之间的过渡行为中发挥着重要作用。
We show that the transitions which occur between close orders of synchronization in the cardio-respiratory system are mainly due to modulation of the cardiac and respiratory processes by low-frequency components. The experimental evidence is derived from recordings on healthy subjects at rest and during exercise. Exercise acts as a perturbation of the system that alters the mean cardiac and respiratory frequencies and changes the amount of their modulation by low-frequency oscillations. The conclusion is supported by numerical evidence based on a model of phase-coupled oscillators, with white noise and low-frequency noise. Both the experimental and numerical approaches confirm that low-frequency oscillations play a significant role in the transitional behavior between close orders of synchronization.
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