Figure 1
Experimental protocol and model architecture. Procedure of the discrimination task, for the three blocks. (a) Structure of a trial: Following a fixation period, the circular grating (Gabor patch, oriented clockwise, C, or counterclockwise, AC) appears and participants make the decision (C or AC). In confidence blocks, after a delay, participants report their confidence with respect to their choice, on a discrete scale with 10 levels. (b) Time course of a pure block trial. (c) Time course of a confidence block trial. (d) Time course of a feedback block trial. (e) Decision-making network structure. The network consists of two neural pools (specific to clockwise (C) and anti-clockwise (AC) stimuli), endowed with self-excitation and mutual inhibition. After a decision is made (threshold crossed), a non specific inhibitory input (corollary discharge) is sent onto both units. (f) Time course of the neural activities of both pools during two consecutive trials.
