Fig. 3.

Urgency function estimation. We exploited the sum of log-likelihood ratios (SumLogLR) values to estimate the level of urgency at decision time (DT) for each subject (Subj) i and each session j. To do so, we followed 4 steps (shown from left to right). First, SumLogLR values were obtained for different bins of DT. Then, these values were multiplied by −1. Next, a constant of 3 was added to obtain positive values. Finally, a linear regression was fitted over the positive values. Equation of the regression allowed us to extract the intercept and the slope of the obtained urgency function (1.79 and 0.06 in this example, respectively). a.u., Arbitrary units.