Figure 2
Graphical representation of functional repertoire, shared/phase-specific repertoire and brain regional influence. (A) Schematic representation of the functional repertoire. Specifically, in the boxes, for each avalanche (i.e. avalanche 1, avalanche 2, …, avalanche n), the matrix represents an avalanche pattern: dark blue squares indicate the brain regions (ROIs) activated at a certain time frame, while the light blue ones are all the regions that have been activated up to that moment. The transition from activation to inactivation, and vice versa, between two consecutive time frames is defined as switch. Brain-plots and the set of unique avalanche patterns (i.e. pattern 1, pattern 2, …, pattern n) are illustrated for each avalanche. The number of unique avalanche patterns defines the size of the functional repertoire and is used as a proxy for the flexibility of the brain dynamics. (B) Schematic representation of shared and phase-specific repertoires. Blue squares depict the brain regions whose activity is over threshold during the avalanche (unique avalanche patterns); phase 1 and phase 2 share patterns 1 and 2 (green “ = ” symbol), while patterns 3 and 4 are phase-specific (red “ ≠ ” symbol). Regional influence is given by the sum of each region's activations. Specifically, region “a” is only involved in the shared repertoire (2 times), while regions “b” and “e” are solely involved in the phase-specific repertoire (twice and ones, respectively). The figure was made using Matlab 2019a.
