Fig 2. Probability f(k, k′) for a random input of a k-neuron to originate from a k′-neuron, sampled from the adjacency matrices of simulations with N = 10⁵.

Normalization demands ∑_k′ f(k, k′) = 1. (A) Uncorrelated network, (B) assortative network, (C) disassortative network. The corresponding Pearson coefficients are p = −0.004 (uncorrelated); p = 0.997 (assortative); p = −0.662 (disassortative).