Figure 4.

Regions showing the delay-boundary effect, the presentation-boundary effect, and an interactive effect of these two factors. (a) Regions whose activity differed between within- and across-event retrieval (red) were largely separate from those whose activity changed when an event boundary occurred during object presentation (green) and those whose activity depended on the interaction of these factors (blue). Overlap is shown in yellow, magenta, and light blue. (b) Retrieval related activity in several adjacent regions in the right IPL (outlined in the red box in panel a and shown here from a dorsal posterior angle) immediately ventral to the posterior intraparietal sulcus (marked in orange) differed along the delay- and presentation-boundaries factors, as well as their interaction. The yellow outline indicates the iIPL region of interest defined by coordinates from a study of resting state activity in the HPC (Vincent, et al., 2006). (c) Activity in the right IPL region that showed an interactive effect of delay- and presentation-boundaries mirrored recognition test accuracy (blue region in panel b), changing most when boundary objects were tested across events. Error bars indicate 95% confidence intervals.