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Pulse propagation in discrete systems of coupled excitable cells

Carpio Rodríguez, Ana María and Bonilla , L.L. (2002) Pulse propagation in discrete systems of coupled excitable cells. SIAM Journal on applied mathematics, 63 (2). pp. 619-635. ISSN 0036-1399

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Propagation of pulses in myelinated fibers may be described by appropriate solutions of spatially discrete FitzHugh-Nagumo systems. In these systems, propagation failure may occur if either the coupling between nodes is not strong enough or the recovery is too fast. We give an asymptotic construction of pulses for spatially discrete FitzHugh-Nagumo systems, which agrees well with numerical simulations, and discuss the evolution of initial data into pulses and pulse generation at a boundary. Formulas for the speed and length of pulses are also obtained.

Item Type:Article
Uncontrolled Keywords:Discrete reaction-diffusion equations, traveling wave pulses, propagation failure, spatially discrete FitzHugh–Nagumo system
Subjects:Sciences > Mathematics > Mathematical statistics
Sciences > Mathematics > Differential equations
ID Code:15044

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