WIAS Preprint No. 2413, (2017)

Pulses in FitzHugh--Nagumo systems with rapidly oscillating coefficients


  • Gurevich, Pavel
  • Reichelt, Sina

2010 Mathematics Subject Classification

  • 35B40 35B40 35K65 37C29 37C75 37N25


  • Traveling waves, pulse solutions, FitzHugh-Nagumo system, two-scale convergence, spectral decomposition, semigroups




This paper is devoted to pulse solutions in FitzHugh-Nagumo systems that are coupled parabolic equations with rapidly periodically oscillating coefficients. In the limit of vanishing periods, there arises a two-scale FitzHugh-Nagumo system, which qualitatively and quantitatively captures the dynamics of the original system. We prove existence and stability of pulses in the limit system and show their proximity on any finite time interval to pulse-like solutions of the original system.

Appeared in

  • Multiscale Model. Simul., 16 (2018), pp. 833--856.

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