Before revision: Functional networks provide a topological description of activity patterns in the brain, as they stem from the propagation of  activity on the anatomical, or structural network of synaptic connections , which possess a URLanization.
After revision: Functional networks provide a topological description of activity patterns in the brain, as they stem from the propagation of activity on the anatomical, or structural network of synaptic connections . This last is well known to URLanized in hierarchical and modular way.