Averaging for a Fully-Coupled Piecewise Deterministic Markov Process in Infinite Dimension

Details Averaging for a Fully-Coupled Piecewise Deterministic Markov Process in Infinite Dimension Averaging for a Fully-Coupled Piecewise Deterministic Markov Process in Infinite Dimension

2011-09-29

arxiv.org/abs/1109.6581v1

Mathematics

Probability

23 pages, 1 figure

Scientific paper

In this paper, we consider the generalized Hodgkin-Huxley model introduced by Austin in \cite{Austin}. This model describes the propagation of an action potential along the axon of a neuron at the scale of ion channels. Mathematically, this model is a fully-coupled Piecewise Deterministic Markov Process (PDMP) in infinite dimension. We introduce two time scales in this model in considering that some ion channels open and close at faster jump rates than others. We perform a slow-fast analysis of this model and prove that asymptotically this two time scales model reduces to the so called averaged model which is still a PDMP in infinite dimension for which we provide effective evolution equations and jump rates.

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