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Keywords: Spiral wave Breakup Factor of synchronization Hodgkin–Huxley neurons Channel noise Regular networks a b s t r a c t An additional gradient force is often used to simulate the polarization effect induced by the external field in the reaction–diffusion systems. The polarization effect of weak electric field on the regular networks of Hodgkin–Huxley(More)
Josephson junction oscillators can generate chaotic signals with a wide frequency spectrum. An improved scheme of Lyapunov functions is proposed to control chaotic resonators of this type and forces them to converge to an arbitrary selected target signal. A changeable gain coefficient is introduced into the Lyapunov function, and the controllers are(More)
Ca 2+ spiral wave is observed in a large number of cell types. Based on a Ca 2+ model presented by Atri et al., the propagation and synchronization of the intracellular Ca 2+ spiral waves are numerically studied and some interesting results are obtained. (i) The largest Lyapunov exponents versus bifurcation parameter is calculated to investigate the(More)
Keywords: Spiral wave Fithhugh–Nagumo model Vortex electric field a b s t r a c t In this paper, a new scheme is proposed to remove the spiral wave in a two-dimensional Fithhugh–Nagumo type equation by introducing a class of vortex electric field into the media. A long electric solenoid with large pipe diameter is used to generate a spatial magnetic field(More)
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