Fig. 5.

Trial-by-trial model captures rat behavior, and shows optimal linear discounting. a Example reverse correlation curves generated by the trial-by-trial model (light red) compared with a rat’s behavior (blue and green). Shaded area is one standard deviation. b–d Error bars show 95% confidence intervals. b Best fitting discounting rates for rats trained on the dynamic task (light red), and for rats trained in a static environment (blue, data and fits from Brunton, 2013¹²). c Each rat’s noise level and discounting rate (light red) compared to the optimal linear trade-off (black). d Each rat’s evidence discounting parameter compared to the accuracy maximizing discounting level. e The average accuracy for the model fit to each rat’s behavior, and optimized to maximize accuracy