Figure 2
Behavioral performance with regular and novel stimulus sets. (a) Blockwise behavioral performance for a regular stimulus set (1 block = 8 trials, mean ± SEM). The left panel shows the performance after a stimulus set change. The right panel shows the performances before and after the reversal. The black line shows the performance in the experimental sessions, while the cyan, green, orange lines show the performance in different divisions of the training sessions after the regular stimulus sets were introduced (cyan: 201st to 300th sessions, green: 101st to 200th sessions, and orange: 1st to 100th sessions). Ten sessions were randomly selected from each division. Green and orange asterisks indicate the performance in green and orange is significantly worse than that in black, respectively. The performances for the stimulus set 1 and set 2 are shown for monkey 1 and monkey 2, respectively. Similar performances were observed in the other stimulus sets (not shown). Blockwise performance for regular stimulus sets is fully reported elsewhere27. (b) Trialwise behavioral performance before and after the reversal for a regular stimulus set (mean ± SEM). The dataset is the same as that in the black line in (a). (c) Blockwise behavioral performance before and after the reversal for novel stimulus sets (8 stimuli, mean ± SEM). The left panel shows the performance for the novel stimulus sets in the new learning. The right panel shows the performance before and after the reversal, respectively (monkey 1, n = 17, monkey 2, n = 13). (d) Trialwise behavioral performance before and after the reversal for novel stimulus sets. The dataset is the same as that in (c).
