外噪声作用下可激发系统中的预测同步现象

采用数值模拟方法研究了由2个完全相同的可激发系统,通过单向延迟反馈耦合连接所组成主动-从动系统中的预测同步现象.结果表明在相等的外噪声作用下,当延迟时间和耦合强度在适当的范围内取值时,从动系统发生放电活动时所产生的动作电位能够预测主动系统发生放电活动时所产生的动作电位,即出现了预测同步现象,并且预测时间不可能大于主动神经元的响应时间.

Anticipating synchronization in excitable systems driven by external noise

The phenomenon of anticipating synchronization of the master-slave system comprising of two identical excitable systems with unidirectional time-delay feedback coupling is numerically studied in this paper.The results show that the action potentials fired by the slave system can anticipate the action potentials fired by the master system under appropriate delay time and coupling strength which are subject to the same external noise,i.e.,the occurrence of anticipating synchronization.It is also found that it is impossible for the anticipation time to be larger than the response time of master system.