关于正弦起搏器控制耦合神经元的去同步探索  

AN EXPLORATION ON THE DESYNCHRONIZATION OF COUPLED NEURONS WITH A PACEMAKER

作　　者：李美生[1] 陈偲[1] 张红慧[2] 

机构地区：[1]北京航空航天大学数学与系统科学学院,北京100191 [2]北京航空航天大学航空科学与工程学院,北京100191

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)~~

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.

关 键 词：HR神经元 起搏器 正弦刺激 去同步 

分 类 号：R338[医药卫生—人体生理学]