Table 1: An overview of all graph metrics that have been used in the study.

Overview of graph indices

Path lengthMean of the nodes’ shortest paths
Clustering coefficientMean of the nodes’ triangles intensity around each node
DiameterMaximum graph eccentricity
Causal densitySum of all significant couplings in
Spectral radius: first eigenvalue of adjacency matrix
Spectral gap: the difference between the first two eigenvalues of matrix
Algebraic connectivity: the second smallest eigenvalue of the Laplacian matrix