Fig. 3: A gradient of strength of temporal drifting along the hippocampal longitudinal axis.

Temporal drift scores are shown for each voxel in the HPC of the female (A) and male (D) subjects. Temporal drift scores for aHPC and pHPC voxels are shown, indicating a more negative association with time in aHPC than pHPC in both female (B) and male (E) subjects. Non-parametric permutation tests show the above-chance associations between HPC temporal drift scores and the HPC y-axis coordinates for the female (C) and male (F) subject. The blue vertical lines show the correlation between voxel-wise temporal drift scores and the HPC y-axis coordinates, which were significantly above chance for both subjects (n = 5000 permutations).