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Existence of Traveling Fronts and Pulses in Lateral Inhibition Neuronal Networks with Sigmoidal Firing Rate Functions. (arXiv:1810.05142v1 [math.DS])
来源于:arXiv
The purpose of this work is to rigorously prove the existence of traveling
waves in neural field models with lateral inhibition synaptic coupling types
and sigmoidal firing rate functions. In the case of traveling fronts, we
utilize theory of linear operators and the implicit function theorem on Banach
spaces, providing a variation of the homotopy approach originally proposed by
Ermentrout and McLeod (1992) in their seminal study of monotone fronts in
neural field models. After establishing the existence of traveling fronts, we
move to a well-studied singularly perturbed system with linear feedback. For
the special case where the synaptic coupling kernel is a difference of
exponential functions, we are able to combine our results for the front with
theory of invariant manifolds in autonomous dynamical systems to prove the
existence of fast traveling pulses that are comparable to singular homoclinical
orbits. Finally, using a numerical approximation scheme, we derive the
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