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Canards Existence in FitzHugh-Nagumo and Hodgkin-Huxley Neuronal Models

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  • Jean-Marc Ginoux
  • Jaume Llibre

Abstract

In a previous paper we have proposed a new method for proving the existence of “canard solutions” for three- and four-dimensional singularly perturbed systems with only one fast variable which improves the methods used until now. The aim of this work is to extend this method to the case of four-dimensional singularly perturbed systems with two slow and two fast variables. This method enables stating a unique generic condition for the existence of “canard solutions” for such four-dimensional singularly perturbed systems which is based on the stability of folded singularities ( pseudo singular points in this case) of the normalized slow dynamics deduced from a well-known property of linear algebra. This unique generic condition is identical to that provided in previous works. Application of this method to the famous coupled FitzHugh-Nagumo equations and to the Hodgkin-Huxley model enables showing the existence of “canard solutions” in such systems.

Suggested Citation

  • Jean-Marc Ginoux & Jaume Llibre, 2015. "Canards Existence in FitzHugh-Nagumo and Hodgkin-Huxley Neuronal Models," Mathematical Problems in Engineering, Hindawi, vol. 2015, pages 1-17, December.
    • Handle: RePEc:hin:jnlmpe:342010
    DOI: 10.1155/2015/342010
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