The effect of spatially correlated noise on coherence resonance in a network of excitable cells

Details The effect of spatially correlated noise on coherence resonance in a network of excitable cells The effect of spatially correlated noise on coherence resonance in a network of excitable cells

2005-06-10

arxiv.org/abs/cond-mat/0506241v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

11 pages, 4 figure

Scientific paper

10.1103/PhysRevE.72.066121

We study the effect of spatially correlated noise on coherence resonance (CR) in a Watts-Strogatz small-world network of Fitz Hugh-Nagumo neurons, where the noise correlation decays exponentially with distance between neurons. It is found that CR is considerably improved just by a small fraction of long-range connections for an intermediate coupling strength. For other coupling strengths, an abrupt change in CR occurs following the drastic fracture of the clustered structures in the network. Our study shows that spatially correlated noise plays a significant role in the phenomenon of CR through enforcing the clustering of the network.

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