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Propagation of bursting oscillations. (English) Zbl 1192.35009

Summary: We investigate a system of partial differential equations of reaction-diffusion type which displays propagation of bursting oscillations. This system represents the time evolution of an assembly of cells constituted by a small nucleus of bursting cells near the origin immersed in the middle of excitable cells. We show that this system displays a global attractor in an appropriated functional space. Numerical simulations show the existence in this attractor of recurrent solutions which are waves propagating from the central source. The propagation seems possible if the excitability of the neighbouring cells is above some threshold.

MSC:

35B05 Oscillation, zeros of solutions, mean value theorems, etc. in context of PDEs
65M06 Finite difference methods for initial value and initial-boundary value problems involving PDEs
92C17 Cell movement (chemotaxis, etc.)
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References:

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