Fig. 4.

SCP neurofeedback results from the quadratic model. The first row depicts the quadratic model’s mean predictions vs. empirical means across all sessions for each Feedback condition × Task combination. The shaded regions indicate 95% posterior credible intervals. The marked dashed lines indicate the empirical means in each session, condition and task. The second row depicts the posteriors of differentiation (negativity – positivity) at the beginning of training, (D($t_1$), light green) and at the end of training (D(t₂₄), dark green). (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)