# Rich-Club Organization **Entity class:** Concept or analytic term **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. <!-- BEGIN HUMANIZED RELATIONSHIPS 2026-09-11 --> This entry's documented connections are expressed in its definition and related-work routes, with provenance retained in the source-linked material. <!-- END HUMANIZED RELATIONSHIPS 2026-09-11 --> ## Related Work in the Corpus <!-- BEGIN HUMANIZED CORPUS ROUTES 2026-09-11 --> - In [[articles/2026 Annual Report on Brain-Computer Interfaces|2026 Annual Report on Brain-Computer Interfaces]], **FlyWire: Whole-Brain Completeness at Insect Scale** provides the narrative context for **Rich-Club Organization**: The companion annotation paper, led by the Cambridge Drosophila Connectomics Group under Gregory Jefferis (MRC Laboratory of Molecular Biology and University of Cambridge), provided systematic hierarchical annotation of neuronal… <!-- END HUMANIZED CORPUS ROUTES 2026-09-11 -->