Journal Articles Stochastic Processes and their Applications Year : 2022

Interacting Hawkes processes with multiplicative inhibition

Abstract

In the present work, we introduce a general class of mean-field interacting nonlinear Hawkes processes modelling the reciprocal interactions between two neuronal populations, one excitatory and one inhibitory. The model incorporates two features: inhibition, which acts as a multiplicative factor onto the intensity of the excitatory population and additive retroaction from the excitatory neurons onto the inhibitory ones. We give first a detailed analysis of the well-posedness of this interacting system as well as its dynamics in large population. The second aim of the paper is to give a rigorous analysis of the longtime behavior of the mean-field limit process. We provide also numerical evidence that inhibition and retroaction may be responsible for the emergence of limit cycles in such system.
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hal-03233710 , version 1 (22-07-2024)

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Céline Duval, Eric Luçon, Christophe Pouzat. Interacting Hawkes processes with multiplicative inhibition. Stochastic Processes and their Applications, 2022, 148, pp.180-226. ⟨10.1016/j.spa.2022.02.008⟩. ⟨hal-03233710⟩
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