CLUSTERS OF SYNCHRONIZATION AND BISTABILITY IN LATTICES OF CHAOTIC NEURONS

We investigated different regimes of synchronization in large lattices of chaotic spiking-bursting neurons. The lattices exhibit the followi ng features: developed spatio-temporal disorder with no synchronizatio n; spatial clusters of bursting synchronization; homogeneous bursting synchronization; and complete chaotic synchronization. We observed a b istable synchronization phenomenon in a wide region of the control par ameter space. The bistability exists for homogeneous bursting synchron ization with long-range correlation and spatial clusters of partial sy nchronization. The bistable regime appears in lattices with a size lar ger than the space-scale of these clusters.