Figure 7.

Comparison of our method (a,c,e) and the WSTA method^7,10 (b,d,f). The data was simulated using the phase model (1). Different colors correspond to the length of time series used for the reconstruction: t_sim = 10² in red, 10³ in green, 10⁴ in blue and 10⁵ in black (for our method (a,c,e) only the t_sim = 10² is plotted). The true PRC is depicted with a thick gray curve. In (a,b) the coupling is relatively weak, $\epsilon \parallel Z\parallel =5$, and the correlation time of the input is relatively small, τ = 0.01. These are good conditions for both methods, and indeed both perform well. In (c,d) the coupling remains as before but the correlation time is larger, τ = 0.1. In (e,f) the coupling strength is increased, $\epsilon \parallel Z\parallel =20$, while the correlation time is small again, τ = 0.01.