title: Spatial coherence resonance in excitable biochemical media induced by internal noise.
abstract: We show that in a spatially extended excitable medium, presently modelled with diffusively coupled FitzHugh-Nagumo neurons, internal stochasticity is able to extract a characteristic spatial frequency of waves on the spatial grid. Internal noise is introduced via a stochastic simulation method and is the only agent acting on the system. Remarkably, the spatial periodicity is best pronounced at an intermediate level of internal stochasticity. Thus, the reported phenomenon is an observation of internal noise spatial coherence resonance in excitable biochemical media.
authors.affiliation: Department of Physics, Faculty of Natural Sciences and Mathematics, University of Maribor, Koroska cesta 160, SI-2000 Maribor, Slovenia.
authors.forename: Marko
authors.initials: M
authors.lastname: Gosak
authors.forename: Marko
authors.initials: M
authors.lastname: Marhl
authors.forename: Matjaz
authors.initials: M
authors.lastname: Perc
mesh_terms: D001669:Biochemical Phenomena; D001671:Biochemistry; D003198:Computer Simulation; D008956:Models, Chemical; D013269:Stochastic Processes