Monitoring Effective Connectivity in the Preterm Brain: A Graph Approach to Study Maturation

Table 1

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

Overview of graph indices
Path length	Mean of the nodes’ shortest paths
Clustering coefficient	Mean of the nodes’ triangles intensity around each node
Diameter	Maximum graph eccentricity
Causal density	Sum 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