# Rich-Club Organization **Collection:** [[collections/Neurotech|Neurotech]] **Type:** Network-science concept **Primary source:** [[articles/2026 Annual Report on Brain-Computer Interfaces|2026 Annual Report on Brain-Computer Interfaces]] ## Definition **Rich-club organization** describes a network pattern in which highly connected nodes are more densely interconnected with one another than expected under a comparison model. ## Relationships - The annual report attributes a rich-club pattern to the [[wiki/FlyWire|FlyWire]] graph and reports preferential connectivity involving 30% of neurons. - The interpretation depends on node definition, degree threshold, edge weighting, and null model; density alone does not establish functional control.