Figure 17.
Analysis of the post-error trajectories in the PEQ regime. Phase-plane trajectories (in log-log plot, for ease of viewing) of the post-correct and post-error trials (same as Fig. 16 in the PEQ case). We consider that the previous decision was R. The black filled circle shows the neutral attractor state (during the relaxation period). During the presentation of the next stimulus, the attractors and basins of attraction change (gray area and the green dashed line). A, B, PEQ and PIA regime (c = 20% and ICD,max = 0.047 nA). The blue color codes for post-correct trials, and the red one for post-error. The plain lines represent mean dynamics for (A) or single dynamics (B). C, D, Regime with PEQ and PIA in the alternated case (c = −20% and ICD,max = 0.047 nA).The post-error relaxation already lies within the alternated basin of attraction. For alternated trials, the dynamics needs to cross the invariant manifold (green dashed line), which denotes the boundary between the basins of attraction. The dynamics is followed during 400 ms for repeated and 800 ms for alternated case, as if there were no decision threshold. The actual decision occurs at the crossing of the dashed gray line, indicating the threshold.