Figure 1.

Phase and bifurcation diagrams for subject H1. (A1–A3) Equilibrium firing rates 〈r^*〉 vs. $\overline{\eta }$ for the up sweep (blue dots) and down-sweep (orange squares). For each $\overline{\eta }\in \left[-50,10\right]$ in steps of $\Delta \overline{\eta }=1.5$, the system is initialized using the final state of the previous run and evolves for 2 s after which the average network firing rate in the equilibrium state is determined. Different panels correspond to different σ values: σ = 1.5 (A1), σ = 1 (A2), and σ = 0.5 (A3). The solid (dashed) black line corresponds to the stable (unstable) equilibria in the single-node case. Maps of regimes as a function of σ and $\overline{\eta }$ showing the network average 〈r^*〉 color-coded for up- (B) and down-sweep (C), obtained by following the same procedure as in (A1–A3) for σ ∈ [0, 2] in steps of Δσ = 0.05. The black line indicates the single-node map of regimes like in Montbrió et al. (2015). In panels (B,C) the cyan square and triangle mark $\overline{\eta }=-6.3,-9.54$, respectively. Parameter values: N_pop = 90, τ_m = 20 ms, Δ = 1, J_kk = 20, $J_{kl}=5{\tilde{J}}_{kl},\forall k\ne l$.