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Soliton-Like Regimes and Excitation Pulse Reflection (Echo) in Homogeneous Cardiac Purkinje Fibers: Results of Numerical Simulations

机译：均质浦肯野纤维中的孤子状态和激发脉冲反射（回波）：数值模拟的结果

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摘要

On the basis of numerical simulations of the partial McAllister-Noble-Tsien equations quantitatively describing the dynamics of electrical processes in conductive cardiac Purkinje fibers we reveal unusual – soliton-like – regimes of interaction of nonlinear excitation pulses governing the heart contraction rhythm: reflection of colliding pulses instead of their annihilation. The phenomenological mechanism of the reflection effects is that in a narrow (but finite) range of the system parameters the traveling pulse presents a doublet consisting of a high-amplitude leader followed by a low-amplitude subthreshold wave. Upon collisions of pulses the leaders are annihilated, but subthreshold waves summarize becoming superthreshold and initiating two novel echo-pulses traveling in opposite directions. The phenomenon revealed presents an analogy to the effect of reflection of colliding nerve pulses, predicted recently, and can be of use in getting insight into the mechanisms of heart rhythm disturbances.

机译：在定量描述导电性心脏Purkinje纤维中电过程动力学的部分McAllister-Noble-Tsien方程的数值模拟的基础上，我们揭示了控制心脏收缩节律的非线性激励脉冲相互作用的异常（类似于孤子）相互作用机制：碰撞脉冲而不是of灭。反射效应的现象学机理是，在系统参数的狭窄（但有限）范围内，行进脉冲呈现出由高振幅前导波和低振幅亚阈值波组成的双峰。在脉冲碰撞时，首领被歼灭，但亚阈值波总结为变得超阈值，并引发了两个沿相反方向传播的新颖回声脉冲。揭示的现象类似于最近预测的碰撞神经脉冲反射的影响，可用于深入了解心律失常的机制。

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期刊名称 Journal of Biological Physics
作者
O.V. Aslanidi; O.A. Mornev;
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作者单位

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年(卷),期 1999(25),2-3
年度 1999
页码 149–164
总页数 16
原文格式 PDF
正文语种
中图分类生物学;
关键词
Excitable media Nonlinear waves Heart Reflection Limit cyclebifurcation;

机译：激发介质;非线性波;心;反射;极限周期分叉;

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1. Excitation Generation, and Propagation of Soliton-Like Spin-Wave Pulses in Ferromagnetic Films: Numerical Calculation and Experiment [J] . M. P. Kostylev, N. G. Kovshikov Technical physics . 2002,第11期

机译：磁薄膜中孤子状自旋波脉冲的激发产生和传播：数值计算和实验
2. Environmentally Stable, High Pulse Energy Yb-Doped Large-Mode-Area Photonic Crystal Fiber Laser Operating in the Soliton-Like Regime [J] . Song Y.-J., Hu M.-L., Wang C.-L., IEEE Photonics Technology Letters . 2008,第13期

机译：在孤子状态下运行的环境稳定，高脉冲能量掺Yb大模式区光子晶体光纤激光器
3. Excitation-contraction coupling in cardiac Purkinje fibers. Effects of cardiotonic steroids on the intracellular [Ca2+] transient, membrane potential, and contraction. [J] . W G Wier, P Hess The Journal of general physiology . 1984,第3期

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4. Simulation of ultra-short soliton-like pulse generation in lossy nonlinear dispersive optical fibers using the beam propagation method [C] . Amir H. Tehranchi, N. Granpayeh Society of Photo-Optical Instrumentation Engineers Conference on Nonlinear Optical Phenomena and Nonlinear Dynamics of Optical Systems . 2002

机译：使用光束传播方法模拟有损非线性色散光纤中的超短孤子样脉冲产生
5. Ablation of cardiac tissue with nanosecond pulsed electric fields: Experiments and numerical simulations. [D] . Xie, Fei. 2015

机译：纳秒脉冲电场消融心脏组织：实验和数值模拟。
6. Excitation-contraction coupling in cardiac Purkinje fibers. Effects of caffeine on the intracellular Ca2+ transient membrane currents and contraction [O] . 1984

机译：心脏浦肯野纤维中的兴奋-收缩耦合。咖啡因对细胞内Ca2 +瞬变膜电流和收缩的影响
7. Excitation-contraction coupling in cardiac Purkinje fibers. Effects of cardiotonic steroids on the intracellular [Ca2+] transient, membrane potential, and contraction [O] . 1984

机译：心脏浦肯野纤维中的兴奋-收缩耦合。强心类固醇对细胞内[Ca2 +]瞬变，膜电位和收缩的影响
8. First Magnetic Measurements of Action Currents in Isolated Cardiac Purkinje Fibers. [R] . Wikswo, J. P., Barach, J. P., Gundersen, S. C., 1983

机译：孤立性心脏浦肯野纤维中动作电流的第一次磁测量。

Soliton-Like Regimes and Excitation Pulse Reflection (Echo) in Homogeneous Cardiac Purkinje Fibers: Results of Numerical Simulations

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