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Updated: Jul 28, 2026

External Excitation of Neurons Using Electric and Magnetic Fields in One- and Two-dimensional Cultures
Published on: May 7, 2017
Effect of spatially correlated noise on coherence resonance in a network of excitable cells
Okyu Kwon1, Hang-Hyun Jo, Hie-Tae Moon
1Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Korea. okyou@kaist.ac.kr
Abstract:
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 reinforcing the role of the clustered structure of the system.
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