Fig. 10.

Exploratory analysis of medial temporal lobe functional correlations. For each participant, the mean z-transformed correlation coefficients between all pairs of regions comprising the medial temporal lobe and its correlated cortical regions (HF, PHC, Rsp, pIPL, vMPFC) is plotted along with the percentage of time participants reported thinking about the past and the future during extended fixation epochs. A significant (but modest) positive relationship is observed between the 2 variables (r = 0.18; P < 0.05), suggesting that participants who think more about the past and/or the future exhibit increased functional coupling within the “MTL subsystem” of the default network.