Topic: phenomenological renormalization group

Theoretical studies show that, operating at criticality maximises both the information processing and storage capabilities of neural systems. Experimental indications that the brain might operate in this way come in the form of: (1) power law distributions of avalanches and (2) non-Gaussian fixed points that appear in phenomenological renormalization group analysis. Despite theoretical benefits and experimental findings, it remains highly debated whether neural criticality is functionally relevant. Firstly, it is hard to confirm if avalanches follow true power laws. Secondly, recent studies in