Department of Control Theory, Nizhni Novgorod State University, Gagarin Avenue 23, 606950, Nizhni Novgorod, Russia.
Institute for Physics and Astronomy, University of Potsdam, Karl-Liebknecht-Strasse 24/25, 14476 Potsdam-Golm, Germany.
Phys Rev E. 2016 Mar;93(3):032202. doi: 10.1103/PhysRevE.93.032202. Epub 2016 Mar 2.
We consider two coupled populations of leaky integrate-and-fire neurons. Depending on the coupling strength, mean fields generated by these populations can have incommensurate frequencies or become frequency locked. In the observed 2:1 locking state of the mean fields, individual neurons in one population are asynchronous with the mean fields, while in another population they have the same frequency as the mean field. These synchronous neurons form a chimera state, where part of them build a fully synchronized cluster, while other remain scattered. We explain this chimera as a marginal one, caused by a self-organized neutral dynamics of the effective circle map.
我们考虑两个耦合的漏电积分点火神经元群体。取决于耦合强度，这些群体产生的平均场可以具有不同的频率或成为频率锁定。在观察到的平均场的 2:1 锁定状态中，一个群体中的单个神经元与平均场不同步，而另一个群体中的神经元与平均场具有相同的频率。这些同步神经元形成了一种嵌合体状态，其中一部分形成了完全同步的簇，而另一部分则分散开来。我们将这种嵌合体解释为一种边缘状态，是由有效圆映射的自组织中性动力学引起的。
