Figure 7: Eigenvalue density of FN (left) and SW (right) RPNs ranging from local (top) to random (bottom) networks. Top: real eigenvalue spectrum of a (symmetric) locally connected network (, , ). Note the exceptional peak of the density at small negative values around −1. Bottom: complex eigenvalue density for (nonsymmetric) RPNs with FN and SW connectivity. The corresponding parameters and are indicated within the plot. The logarithmic gray scale indicates densities up to about 16 per unit square (black).