TABLE 2.

Methods used to measure criticality in articles included in this review.

Methods	Definition	N articles	Articles
Neuronal avalanche	Propagation of neuronal activity following a power-law (Beggs and Plenz, 2003).	21	Cranstoun et al., 2002; Worrell et al., 2002; Li et al., 2005; Freeman et al., 2006; Ribeiro et al., 2010; Dehghani et al., 2012; Meisel et al., 2012, 2013; Priesemann et al., 2013; Scott et al., 2014; Arviv et al., 2016; Fagerholm et al., 2016, 2018; Hudetz et al., 2016; Hahn et al., 2017; Fekete et al., 2018, 2021; Bocaccio et al., 2019; Dürschmid et al., 2020; Meisel, 2020; Varley et al., 2020b
Long-Range Temporal Correlations (LRTC)	Global term for temporal structure of neuronal oscillations (Linkenkaer-Hansen et al., 2001).	13 (combined)
Autocorrelation function	Correlation of a single signal over time (Meisel et al., 2017a).	2	Meisel et al., 2017b; Kim H. et al., 2021
Detrended fluctuation analysis	Scaling exponent from the amplitude envelope of an oscillatory signal (Hardstone et al., 2012).	9	Parish et al., 2004; Monto et al., 2007; Allegrini et al., 2013, 2015; Paradisi et al., 2013; Krzemiński et al., 2017; Irrmischer et al., 2018; Wang et al., 2019; Lombardi et al., 2020
Hurst exponent	Change in autocorrelation over time (Witton et al., 2019).	2	Tagliazucchi et al., 2013; Yan et al., 2016
Pair Correlation Function	Variability of the network (Kim et al., 2017).	3	Kim and Lee, 2019; Huels et al., 2021; Kim M. et al., 2021
Branching parameter m	Capacity to propagate activity in a network (Priesemann et al., 2019).	1	Hagemann et al., 2021
Stability parameter	Measure of the dynamical instability seen at or near the critical state (Solovey et al., 2012).	2	Alonso et al., 2014; Solovey et al., 2015
Phase Lag Entropy (PLE)	Quantifies the diversity of temporal patterns of the phase relationship between two signals (Lee et al., 2019).	1	Lee et al., 2019
Other methods		8	Liu et al., 2014; Scale-free distributions of node size and degrees Stramaglia et al., 2017; Structure-function relation Cerf et al., 2004; Parameter of fluctuation of electropathophysiological activity Abeyasinghe et al., 2020; Dimensionality Atasoy et al., 2017; Power-laws of brain harmonics Ponce-Alvarez et al., 2022; Scaling parameter in fMRI Pullon et al., 2022; Long-time scale mutual information Varley et al., 2020a; Fractal dimension of cortical activity in temporal and spatial domains