Speed of traveling fronts in a sigmoidal reaction-diffusion system.

@article{Zemskov2011SpeedOT,
  title={Speed of traveling fronts in a sigmoidal reaction-diffusion system.},
  author={Evgeny P. Zemskov and Klaus Kassner and Mikhail A. Tsyganov and Irving R. Epstein},
  journal={Chaos},
  year={2011},
  volume={21 1},
  pages={
          013115
        }
}
We study a sigmoidal version of the FitzHugh-Nagumo reaction-diffusion system based on an analytic description using piecewise linear approximations of the reaction kinetics. We completely describe the dynamics of wave fronts and discuss the properties of the speed equation. The speed diagrams show front bifurcations between branches with one, three, or five fronts that differ significantly from the classical FitzHugh-Nagumo model. We examine how the number of fronts and their speed vary with… 
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