Fig. 1.

Pipeline for generating group fornix template. The processing pipeline was used to generate a group template from individual tractography results (proportion of successful streamlines). Steps above the dashed line occur in each participant's native space, whereas steps below the dashed line occur in FMRIB58 FA 1 mm standard space after non-linear warping. Thresholding was performed to include the top 20% of voxels, which resulted in a continuous structure without extraneous voxels. All steps are performed on the left and right fornix results (from the left and right hippocampal seeds, respectively) separately until combined in the final step following binarization.