A Model of Collective Neural Activity in the Critical Brain

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Statistical Mechanics

Biological Physics

Neurons and Cognition

A Model of Collective Neural Activity in the Critical Brain

On the critical signatures of neural activity

We propose a modeling framework to reconcile apparent differences between the intrinsic spatial correlation structure and the scale-and scale-free neuronal avalanches observed in the rat s cortex through state-of-the-art multi-array probes.

We show that the presence of scale-free neuronal avalanches and the associated crackling-noise relation can be explained by the presence of an extrinsic, stochastic-induced mutual information in the system, whereas the intrinsic spatial correlation structure shows the typical features of systems close to their critical point.

We test our results on data obtainedfrom the rat s cortex through state-of-the-art multi-array probes.

Authors

Benedetta Mariani, Giorgio Nicoletti, Marta Bisio, Marta Maschietto, Stefano Vassanelli, Samir Suweis

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