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Spatial coherence resonance in excitable biochemical media induced by internal noise

Authors
Journal
Biophysical Chemistry
0301-4622
Publisher
Elsevier
Publication Date
Volume
128
Identifiers
DOI: 10.1016/j.bpc.2007.04.007
Keywords
  • Excitable Biochemical Media
  • Neuronal Dynamics
  • Internal Noise
  • Spatial Coherence Resonance
Disciplines
  • Chemistry
  • Mathematics
  • Medicine

Abstract

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.

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