-A A +A
The question of how network topology influences emergent synchronized oscillations in excitable media is addressed. Coupled van der Pol–FitzHugh–Nagumo elements arranged either in regular rings or in the square lattice networks are investigated. Clustered and declustered rings are constructed to have the same node connectivity (the same number of links). The systems are chosen to be close-to-threshold, allowing global oscillations to be triggered by a weak diversity among the constituents that, by themselves, would be non-oscillating. The results clearly illustrate the crucial role played by network topology. In particular we found that network performance (activity and synchronization) is mainly determined by the network average path length. The shorter the average path length, the better the network performance. Local properties, as characterized by the clustering coefficient, are less important. In addition …
Publication date: 
15 Jul 2006

I Vragović, E Louis, C Degli Esposti Boschi, G Ortega

Biblio References: 
Volume: 219 Issue: 2 Pages: 111-119
Physica D: Nonlinear Phenomena