A devil's advocate view on 'self-organized' brain criticality

Abstract

Stationarity of the constituents of the body and of its functionalities is a basic requirement for life, being equivalent to survival in first place. Assuming that the resting state activity of the brain serves essential functionalities, stationarity entails that the dynamics of the brain needs to be regulated on a time-averaged basis. The combination of recurrent and driving external inputs must therefore lead to a non-trivial stationary neural activity, a condition which is fulfilled for afferent signals of varying strengths only close to criticality. In this view, the benefits of working vicinity of a second-order phase transition, such as signal enhancements, are not the underlying evolutionary drivers, but side effects of the requirement to keep the brain functional in first place. It is hence more appropriate to use the term 'self-regulated' in this context, instead of 'self-organized'.

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Cited by in corpus (3)

• Fundamental interactions in self-organized critical dynamics on higher-order networks
• Universal Scaling Laws of Absorbing Phase Transitions in Artificial Deep Neural Networks
• Less is different: why sparse networks with inhibition differ from complete graphs