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Route to chaos in a branching model of neural network dynamics

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  • Williams-García, Rashid V.
  • Nicolis, Stam

Abstract

Simplified models are a necessary steppingstone for understanding collective neural network dynamics, in particular the transitions between different kinds of behavior, whose universality can be captured by such models, without prejudice. One such model, the cortical branching model (CBM), has previously been used to characterize part of the universal behavior of neural network dynamics and also led to the discovery of a second, chaotic transition which has not yet been fully characterized. Here, we study the properties of this chaotic transition, that occurs in the mean-field approximation to the kin=1 CBM by focusing on the constraints the model imposes on initial conditions, parameters, and the imprint thereof on the Lyapunov spectrum. Although the model seems similar to the Hénon map, we find that the Hénon map cannot be recovered using orthogonal transformations to decouple the dynamics. Fundamental differences between the two, namely that the CBM is defined on a compact space and features a non-constant Jacobian, indicate that the CBM maps, more generally, represent a class of generalized Hénon maps which has yet to be fully understood.

Suggested Citation

  • Williams-García, Rashid V. & Nicolis, Stam, 2022. "Route to chaos in a branching model of neural network dynamics," Chaos, Solitons & Fractals, Elsevier, vol. 165(P1).
    • Handle: RePEc:eee:chsofr:v:165:y:2022:i:p1:s0960077922009183
    DOI: 10.1016/j.chaos.2022.112739
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    References listed on IDEAS

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    1. Sinisa Pajevic & Dietmar Plenz, 2009. "Efficient Network Reconstruction from Dynamical Cascades Identifies Small-World Topology of Neuronal Avalanches," PLOS Computational Biology, Public Library of Science, vol. 5(1), pages 1-20, January.
    2. Meixiang Cai, 2015. "Complex Dynamics in Generalized Hénon Map," Discrete Dynamics in Nature and Society, Hindawi, vol. 2015, pages 1-18, March.
    3. Erik Mosekilde & Zhanybai T. Zhusubaliyev & Vadim N. Rudakov & Evgeniy A. Soukhterin, 2000. "Bifurcation analysis of the Henon map," Discrete Dynamics in Nature and Society, Hindawi, vol. 5, pages 1-19, January.
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    Cited by:

    1. Chen, Chengjie & Min, Fuhong & Zhang, Yunzhen & Bao, Han, 2023. "ReLU-type Hopfield neural network with analog hardware implementation," Chaos, Solitons & Fractals, Elsevier, vol. 167(C).
    2. Deng, Jie & Li, Hong-Li & Cao, Jinde & Hu, Cheng & Jiang, Haijun, 2023. "State estimation for discrete-time fractional-order neural networks with time-varying delays and uncertainties," Chaos, Solitons & Fractals, Elsevier, vol. 176(C).

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