Graphical rendering of tractography of the left cingulum bundle (CB) in a representative healthy control. Points 1 to 5 represent anatomical landmarks (LMs) used for sub-segmentation analysis. LM1, LM2 and LM3 were positioned in the dorsal part of the cingulum bundle, while LM4 and LM5 were positioned in the ventral part of the cingulum bundle: *LM1: in the transversal plane, in the most anterior point of the corpus callosum; *LM2: in a coronal plane, the most dorsal point of the CC; *LM3: in a coronal plane, the last slice where the corpus callosum can be seen posteriorly; *LM4: in the transversal plane, in the first slice where the corpus callosum can be seen in the dorsal/ventral axis; *LM5: in the coronal plane, in the slice in between where LM2 and LM 4 were placed.