General Relationship of Global Topology, Local Dynamics, and Directionality in Large-Scale Brain Networks
Fig 2
Distinct local dynamics of hub and peripheral nodes.
A coupled Stuart-Landau model oscillator was simulated on a scale-free network with 78 nodes; distinct local dynamics at hub nodes (green triangle: defined as nodes with degree above the group standard deviation), and peripheral nodes (yellow circle: defined as nodes with degree 1) are found as coupling strength S is varied. (A) Mean phase coherence (PC), (B) amplitude, and (C) averaged dPLI for the two groups of nodes are presented. (D) The average coupling strength of j, Kj, is shown as function of amplitude . Here,
is the order parameter. We analytically identified that
is a monotonic increasing function of
, such that
. For the simulation, the time delay between each node was given as 10ms.