Identified frontal regions, ordered from most anterior to most posterior.

<p>Note.</p><p>*<i>P</i>0.10,</p><p>**<i>P</i>0.05,</p><p>***<i>P</i>0.01. X, Y, and Z correspond to the coordinates in Tailarach stereotactic space of the center of mass of the ROI, with positive values referring to regions right of (X), anterior to (Y), and superior to (Z) the anterior commissure (AC). Volume refers to the number of voxels (converted to ) for each ROI. Each of the Context, Episode, Low-Base, and High-Low columns reflect the mean % signal change and significance for the blocked contrasts as defined in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0030284#pone-0030284-g003" target="_blank">Figure 3:</a> Context reflects (high contextual control - low contextual control), Episode reflects (high episodic control - low episodic control), Low-Base reflects (Low abstraction - baseline), and High-Low reflects (high abstraction - low abstraction). Underlined values correspond to significant effects that are not predicted by either the information cascade or levels of abstraction hypotheses. No ROIs demonstrated a significant duration contrast or an interaction among these contrasts. Sustained and Transient columns reflect the mean % signal change and significance for the Duration (multiple-trial - single-trial) contrast on sustained and event-related estimates, respectively (a negative sign indicates greater activity in single-trial conditions). Bold font indicates regions that demonstrated a significant interaction between maintenance duration and temporal dynamics.</p>†<p>indicates the closest ROI to the mid-DLPFC area identified by an episodic control manipulation in Koechlin, Ody, & Kouneiher, 2003 (distance = 8.1 mm) and any of the mid-DLPFC ROIs identified by the dimension contrast in Badre & D'Esposito, 2007 (distance = 10 mm).</p>‡<p>indicates the closest ROI to the posterior PFC area identified by contextual control in Koechlin, Ody, & Kouneiher, 2003 (distance = 5.9 mm).</p>§<p>indicates the closest ROI to the posterior PFC ROI identified by the feature contrast in Badre & D'Esposito, 2007 (distance = 5.4 mm).