Activity in mid-DLPFC, FPC, SPL, and postMTG ROIs for each phase identified in the test and for fixation baseline blocks (Fix). Activity is measured by percentage signal change. The vertical bars denote SD of the means. The location of each ROI is reported in top part of the figure (the left hemisphere is shown). The signal was averaged across the right and left hemispheres in each ROI. SrP1, SrP2, Dsv, FlP1, and FlP2 refer to SearchPhase1, SearchPhase2, Discovery, FollowingPhase1, and FollowingPhase2, respectively.