Abstract
A model describing the dynamics of a one-dimensional chain of interacting nonlocally coupled neurons, based on properties of the fractional Laplacian with constant and variable order is proposed. As a result of numerical simulation of the action potential propagation for various types of nonlocal interactions (with a constant set of parameters corresponding to nonlinear functions of the Hindmarsh—Rose model, as well as diffusion coefficients), the appearance of various spatiotemporal modes is established. At given parameters, in the case of classical diffusion, the general trend to synchronous behavior is observed. In the superdiffusion case, the modes of cluster excitation of the action potential are formed. For systems with variable-order fractional Laplacian, spatial anisotropy of arising structures is characteristic. It is shown that the introduction of long-range couplings realized in the system by introducing the fractional Laplacian can provide additional possibilities of describing dynamic properties of interacting neurons.
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This study was supported by the Russian Science Foundation, project no. 22-21-00546.
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Translated by A. Kazantsev
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Fateev, I.S., Polezhaev, A.A. Dynamics of a Chain of Interacting Neurons with Nonlocal Coupling, Given by Laplace Operator of Fractional and Variable Orders with Nonlinear Hindmarsh–Rose Model Functions. Bull. Lebedev Phys. Inst. 50, 243–252 (2023). https://doi.org/10.3103/S1068335623060039
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DOI: https://doi.org/10.3103/S1068335623060039