摘要
以全同HR神经元的耦合系统为例,探索了通过加入正弦起搏器实现其去同步的问题.发现正弦起搏器不但可以减弱系统的同步性,还可以改变神经元的放电模式.对系统去同步情况进行了分类,用度量指标刻画系统的去同步程度,并进行了相应的数值模拟.结果表明:在一定参数范围内,系统的去同步效果对于神经元间耦合强度的敏感性远大于对起搏器的控制强度的敏感性.
Taking a coupled system of identical HR neurons for instance, we explored how to actualize its desynchronization by adding a sinusoidal pacemaker to the system. It was discovered that the pacemaker with a sinusoidal signal could weaken the synchronization of the system and also change the modes of the neurons＇ sparks. Therefore, the extents of the system＇ s desynchronization were classified. Then, the indexes for measuring the level of the desynchronization were designed and several homologous simulations were done. The results showthat,in a certain range of parameters, the level of the system＇ s desynchronization is far more sensitive to coupling coefficient between the two neurons than the controlling coefficient of the pacemaker.
出处
《动力学与控制学报》
2015年第2期128-132,共5页
Journal of Dynamics and Control
基金
国家自然科学基金资助项目(11071020)~~
关键词
HR神经元
起搏器
正弦刺激
去同步
HR neuron, pacemaker, sinusoidal stimulus, desynchronization
