Wiring diagram ( Swanson & Bota, 2010 ) : An illustration of the physical arrangement of connections (including route information) between a set of nodes-gray matter regions, neuron types (Bota & Swanson, 2007), or neurons (Waldeyer, 1891)-in the nervous system (Monro, 1783). Wiring diagrams can be at various levels of abstraction from three-dimensional models to two-dimensional schema but a complete wiring diagram, by definition, includes route information; see Gregory (1966), Wikipedia (Wiring diagram).