Fig 2. Evolution and statistics of phase metrics for two NA oscillators being (A) in- and (B) anti-phase synchronized.

(a, b, h, i) Phase differences Δθ_1,2(t), (black) and ϕ_1,2(t), (red and magenta for significant PLV, and blue otherwise) with top plots zooming the shaded interval of the lower plots. (c, j) PLV (blue) and its mean value (black), and levels of significance (magenta and red). (d, k) Effective coupling strength, K_eff (black) compared with the absolute value of the frequency difference, Δω_eff, (blue if ω₁ < ω₂ and red otherwise), and (e, l) effective natural frequencies (red for ω₁ and blue for ω₂). (f, g, m, n) PDF (dashed red and full magenta line), histograms of phase differences during epochs of synchronization and their means (arrows). Parameters: ω_1,2 = 12 ⋅ [1.03, 0.97] ⋅ 2π rad/s, ϵ_1,2 = [3.6, 3.6], ${\widehat{\omega }}_K=0.63rad/s$, D = 5 (A) τ = 0.01s, ${\widehat{\omega }}_{1,2}=[0.48,0.74]rad/s$, K = 25, ϵ_K = 5; (B) τ = 0.03s, ${\widehat{\omega }}_{1,2}=[0.42,0.60]rad/s$, K = 30, ϵ_K = 6.