Figure 2.

Behavioral results. A, Validation of confidence rating. The confidence rating in the postscan PA task reflected the degree of successful retrieval. In both the face and scene trials, trials with high confidence were correct by ∼90%, those with middle confidence were correct by ∼70%, and those with low confidence were correct by ∼50%. Error bars indicate SEM. B, Proportion of remember trials. There was no significant difference among the percentages of the remember trials in the recent/remote × face/scene trials (main effects: p > 0.12; interaction: p > 0.48). The dashed line shows the proportion of the remember trials when the subjects selected answers by chance both in the test session and postscan session. C, Reaction time in remember trials. There was no significant difference in reaction time among the remember trials of the recent/remote × face/scene trials (main effects: p > 0.49; interaction: p > 0.54).