The excitatory-inhibitory branching process: a parsimonious view of cor- tical 
asynchronous states, excitability, and criticality

Buendía, V

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The excitatory-inhibitory branching process: a parsimonious view of cor- tical asynchronous states, excitability, and criticality

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Buendía, V
Department of Computational Neuroscience, Max Planck Institute for Biological Cybernetics, Max Planck Society;

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https://www.fisicastatistica.unipr.it/conf/PARMA2022/schedule.pdf
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Citation

Buendía, V. (2022). The excitatory-inhibitory branching process: a parsimonious view of cor- tical asynchronous states, excitability, and criticality. In II Conference of the Italian Society of Statistical Physics (SIFS 2022), XXVI National Conference of Statistical Physics and Complex Systems.

Cite as: https://hdl.handle.net/21.11116/0000-000B-3EA6-5

Abstract

The branching process is the minimal model for propagation dynamics, avalanches and criticality, broadly used in neuroscience. A simple extension of it, adding inhibitory nodes, induces a much-richer phenomenology, including an intermediate phase, between quiescence and saturation, that exhibits the key features of "asynchronous states" in cortical networks. Remarkably, in the inhibition-dominated case, it also captures a wealth of non-trivial features of spontaneous brain activity, such as collective excitability, hysteresis, tilted avalanche shapes, and partial synchronization, allowing us to rationalize striking empirical findings within a common parsimonious framework.