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arXiv · 2207.02320

Tricritical behavior in a neural model with excitatory and inhibitory units

Joaquin Almeira·Tomas S. Grigera·Dante R. Chialvo·Sergio A. Cannas
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Abstract

While the support for the relevance of critical dynamics to brain function is increasing, there is much less agreement on the exact nature of the advocated critical point. Thus, a considerable number of theoretical efforts are currently concentrated on which mechanisms and what type/s of transition can be exhibited by neuronal networks models. In that direction, the present work describes the effect of incorporating a fraction of inhibitory neurons on the collective dynamics. As we show, this results in the appearence of a tricritical point for highly connected networks and non-zero fraction of inhibitory neurons. We discuss the relation of the present results with relevant experimental evidence.

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Joaquin Almeira, Tomas S. Grigera, Dante R. Chialvo, Sergio A. Cannas. 2022-07-05. Tricritical behavior in a neural model with excitatory and inhibitory units. https://doi.org/10.1103/physreve.106.054140

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