HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation
Preprints, Working Papers, ...

Route to chaos in a branching model of neural network dynamics

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 $k_{\sf in}=1$ 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 H\'enon map, we find that the H\'enon 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 H\'enon maps which has yet to be fully understood.
Complete list of metadata

Contributor : Stam Nicolis Connect in order to contact the contributor
Submitted on : Friday, May 13, 2022 - 10:30:09 AM
Last modification on : Saturday, May 14, 2022 - 3:36:37 AM

Links full text


  • HAL Id : hal-03667164, version 1
  • ARXIV : 2205.06080



Rashid V. Williams-García, Stam Nicolis. Route to chaos in a branching model of neural network dynamics. 2022. ⟨hal-03667164⟩



Record views