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Revista mexicana de física
versión impresa ISSN 0035-001X
Resumen
BAIER, G. y MULLER, M.. Excitable chaos in diffusively coupled FitzHugh-Nagumo equations. Rev. mex. fis. [online]. 2004, vol.50, n.5, pp.422-426. ISSN 0035-001X.
A prototypic model of three coupled FitzHugh-Nagumo oscillators is shown to exhibit spatio-temporal hyperchaos. With increasing the number of coupled units the number of positive Lyapunov exponents increases. A system in two spatial dimensions shows two types of excitable spatio-temporal (hyper-)chaos depending on which variable is chosen for the coupling. Some implications for excitable cardiac tissue are discussed.
Palabras llave : FitzHugh-Nagumo equation; hyperchaos; spatio-temporal chaos.