Fig. 10.

Analysis of fractional lost value. a Distribution of percent errors across sessions. On average across sessions, mean(percent errors)=8.7%. b Distribution of fractional lost value across sessions. On average across sessions, mean(FLV) = 0.054. c Expected vs. actual fractional lost value. Each data point represents one session. The expected fractional lost value (EFLV; y-axis) was almost identical to the fractional lost value (FLV; x-axis). On average across sessions, mean(EFLV) = 0.055. d Effects of decreasing the steepness of the sigmoid. The range on the x-axis is realistic for our experiments. The blue line is obtained with the mean sigmoid steepness measured in Exp.1 (mean(η)). The red and yellow lines were obtained by dividing mean(η) by 2 and 10, respectively