Synchronization scenarios in three-layer networks with a hub

We study various relay synchronization scenarios in a three-layer network, where the middle (relay) layer is single node, i.e. hub, The two remote layers consist of non-locally coupled rings FitzHugh-Nagumo oscillators modelling neuronal dynamics. All nodes are connected to hub. role hub and its importance for existence chimera states investigated dependence on inter-layer coupling strength time delay. Tongue-like regions parameter plane exhibiting double chimeras, i.e., whose coherent cores synchronized with each other, salt-and-pepper found. At very low intra-layer strength, when do not exist layers, these may be induced by Also influence dilution links between upon dynamics investigated. greatest effect observed domain chimeras removed.