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Pulse trains propagating through excitable media subjected to external noise

  • Statistical and Nonlinear Physics
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Abstract.

We study the propagation of periodic pulse trains in excitable media exposed to external spatio-temporal noise using the light-sensitive Belousov-Zhabotinsky reaction with the underlying Oregonator model as representative example. In the weak noise approximation we find noise-induced transitions in the dispersion relation of pulse trains. We discuss noise-enhanced propagation of pulse trains within a certain wave-length range caused by external noise of moderate strength.

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Beato, V., Engel, H. & Schimansky-Geier, L. Pulse trains propagating through excitable media subjected to external noise. Eur. Phys. J. B 58, 323–329 (2007). https://doi.org/10.1140/epjb/e2007-00228-x

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