Fig. 4.
Temporal changes in the HbO2 concentration in the right (channel 6) and left (channel 15) inferior prefrontal areas during the experiment. (A) and (B) show the preswitch phases and the postswitch phases, respectively. Data of the group mean in children in the pass group at Time 1 (yellow line) and Time 2 (red line), and children in the perseverate group at Time 1 (green line) and Time 2 (blue line) are shown. (For interpretation of the references to color in this figure legend, the reader is referred to the web version of the article.)