Figure 3.

Optimal adaptation timescale and vector field estimate. (A) Dependence on τ_c of the correlation degree between average ν(t) and c(t) in the 100 ms periods at fixed time lag Δt from the beginning of reconstructed trajectories. Each curve correspond to a different Δt in the range [0.3, 0.8] s color coded from blue to red, respectively. Circles point out the maximum anti-correlation for each Δt. (B) Maximum anti-correlation versus Δt. Circles are the same as in (A) The dashed line at Δt = 0.391 s marks the minimum correlation degree. Inset: correlation degree versus τ_c for the optimal Δt. A circle marks the minimum at the optimal τ_c = 257 ms. (C) Estimated G(c,ν) in the phase plane (c,ν) setting τ_c to its optimal value: solid curve, nullcline $\stackrel{.}{\nu }=0$; dashed line, nullcline $ċ=0$. Simulated network parameters as in Figure 1.