Fig. 2: Rats flexibly adapt to stimulus range during each session.

a Psychometric curves for the first three trials of every session (light blue), and three trials randomly sampled from each session (dark blue). Stimulus range and boundary was the same as in Fig. 1c. Category boundary is illustrated as a dashed vertical line and point of subjective equality (PSE) as a square. Scatter plot shows the bootstrap of PSE and maximum slope from the same data set. b Psychometric curves in the “low-range” (light green) and the “high-range” (blue) sessions. Scatterplots show the bootstrap of PSE and average probability of “strong” judgment (excluding stimulus values of 28 and 163 mm/s) estimated from the same data set. Data analyzed by grouping together trials from two different rats with opposite reward rule. c Psychometric curves obtained by averaging the first three trials of all “low-range” (light green) and “high-range” (blue) sessions. Scatterplots show the bootstrap of PSE and average probability of “strong” judgment (excluding stimulus values of 28 and 163 mm/s) estimated from the same data set. d Psychometric curves in the Boundary 88 (light green) and the Boundary 118 (blue) sessions with equal ranges and with extraction probability set uniformly across stimulus values. Histograms in d and e depict the stimulus extraction probabilities. Scatterplots show the bootstrap of PSE and average probability of “strong” judgment estimated from the same data set. e Psychometric curves in the Boundary 88 (light green) and the Boundary 118 (blue) sessions with equal ranges and with extraction probability held equal for the two categories. Source data are provided as a Source Data file.