Degree of hippocampal differentiation is positively correlated with recollection of event-specific Internal details. Correlations (Pearson’s r) between hippocampal differentiation and recall of internal details during the early and delayed autobiographical memory tests. Each marker reflects the Fisher-z transformed r value obtained for one participant. Note that the mentally relive component was unique to experiment 2. Circles reflect participants from experiment 1. Triangles reflect participants from experiment 2. Open triangles denote experiment 2 participants who failed the Montreal Cognitive Assessment. Significance values indicate correlations greater than chance, i.e., correlation of zero, at the group level. * = P < 0.05, ** = P < 0.01, *** = P < 0.001.