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arXiv · 2209.03443

Topological-numerical analysis of a two-dimensional discrete neuron model

Paweł Pilarczyk·Justyna Signerska-Rynkowska·Grzegorz Graff
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Abstract

We conduct computer-assisted analysis of the two-dimensional model of a neuron introduced by Chialvo in 1995 (Chaos, Solitons & Fractals 5, 461-479). We apply the method for rigorous analysis of global dynamics based on a set-oriented topological approach, introduced by Arai et al. in 2009 (SIAM J. Appl. Dyn. Syst. 8, 757-789) and improved and expanded afterwards. Additionally, we introduce a new algorithm to analyze the return times inside a chain recurrent set. Based on this analysis, together with the information on the size of the chain recurrent set, we develop a new method that allows one to determine subsets of parameters for which chaotic dynamics may appear. This approach can be applied to a variety of dynamical systems, and we discuss some of its practical aspects. The data and the software described in the paper are available at http://www.pawelpilarczyk.com/neuron/.

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Paweł Pilarczyk, Justyna Signerska-Rynkowska, Grzegorz Graff. 2022-09-07. Topological-numerical analysis of a two-dimensional discrete neuron model. https://doi.org/10.1063/5.0129859

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