Fig. 6.

Post-error adaptations in beta power and simulated choices. Plotted are BPL time-courses following error and correct responses for all trials (a–d) and incongruent trials specifically (e–h). In the lower row the simulated decision signal derived from the DDMs fit to post-correct and post-error trials is plotted split up by the same factors . We found evidence for increased BPL at response execution (c), which in the DDM is caused by boundary increases following errors (b, d). Additionally, post-error reduction of interference (PERI) is seen in the beta signal (e, g) and predicted by the DDM decision variable as well (f, h). We additionally confirmed that not only post-error adaptations influence distractor processing, but also that the BPL signal is in general sensitive to the degree of response conflict induced per trial by comparing close and far distractor trials (Supplementary Figure 5). Shade = 99% CI, grey background = significant time points between conditions after Bonferroni correction. Vertical coloured lines = flanker/response onset per category as in Fig. 5