Figure 5.

ROI analyses for the four experimental conditions. A, Left ROIs. B, Right ROIs. antPT, Anterior PT; postPT, posterior PT. Mean effect sizes for each of the speaking tasks contrasted with Rest are shown: Overt Noun Definition (black), Covert Noun Definition (white), Overt Counting (gray), and Covert Counting (hatched). Error bars represent 95% confidence intervals. Asterisk indicates significant main effect of Production (Overt/Covert) or Task (Noun Definition/Counting). Table 2 presents the significant post hoc t tests.