Stability of Localized Patterns in Neural Fields

Details Stability of Localized Patterns in Neural Fields Stability of Localized Patterns in Neural Fields

2007-06-06

arxiv.org/abs/0706.0886v1

Nonlinear Sciences

Adaptation and Self-Organizing Systems

Scientific paper

We investigate two-dimensional neural fields as a model of the dynamics of macroscopic activations in a cortex-like neural system. While the one-dimensional case has been treated comprehensively by Amari 30 years ago, two-dimensional neural fields are much less understood. We derive conditions for the stability for the main classes of localized solutions of the neural field equation and study their behavior beyond parameter-controlled destabilization. We show that a slight modification of original model yields an equation whose stationary states are guaranteed to satisfy the original problem and numerically demonstrate that it admits localized non-circular solutions. Generically, however, only periodic spatial tessellations emerge upon destabilization of rotationally-invariant solutions.

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