Time-frequency plots for each cortical site (ATL, FG, and CS) are presented in each column.

<p>(A) Main effect of specificity. (B) Main effect of category. In both (A) and (B), the first and second row report the percentage signal change in total power for each condition, relative to their passive periods. The third row shows differences between the two conditions. The black lines in the time-frequency plots indicate regions showing significant differences between the two conditions (p < .05). See text for details.