Figure 4.

Difference in BOLD signal change (%) between trials in which rules were chosen and rules were specified (black bars, “Rule,” cf. Fig. 3A) and between trials in which actions were chosen and actions were specified (gray bars, “Action,” cf. Fig. 3B). Data are presented from 6 voxels, identified as local peaks of activation difference in the contrast “all-selected versus all-specified” (see Fig. 5 that overlaps extensively with Fig. 3A,B). Coordinates are given in standard anatomic space (MNI template). Despite the slight variation in height of the bars, the contrast of “[action-selection versus action-specification] versus [rule-selection versus rule-specification]” was not significant in any of these regions (see Fig. 3C and Results). PFC = prefrontal cortex, PAR = parietal cortex.