Fig. 4: Integration of dissection-derived cortical annotations with tractography. | Nature Communications

Fig. 4: Integration of dissection-derived cortical annotations with tractography.

From: Brain dissection photogrammetry: a tool for studying human white matter connections integrating ex vivo and in vivo multimodal datasets

Fig. 4

Manual gyral annotations from BraDiPho specimens were used to guide the parcellation of homologous fiber bundles from the HCP842 and SCIL tractography atlases. Panel (A) illustrates the arcuate fasciculus (AF) in spc-02, while panel (B) presents the inferior fronto-occipital fasciculus (IFOF) in spc-16. Each bundle is shown with two coloring schemes: orientation-based (top row), where streamlines are colored according to their local orientation, and cortical termination-based (bottom row). Bar plots below each reconstruction display the proportion of streamlines terminating in different cortical gyri. For the IFOF, a substantial proportion of streamlines terminate in the lingual gyrus (LG, light blue), though these are not visible due to their medial projection within the 3D dissection model. Cortical annotation names and color codes are provided in Supplementary Data 1. AG angular gyrus, FuG fusiform gyrus, IFG inferior frontal gyrus, IOG inferior occipital gyrus, ITG inferior temporal gyrus, LG lingual gyrus, MFG middle frontal gyrus, MOG middle occipital gyrus, MTG middle temporal gyrus, OrbFG fronto-orbital gyrus, PHG parahippocampal gyrus, PrCG precentral gyrus, SFG superior frontal gyrus, SOG superior occipital gyrus, spc specimen, STG superior temporal gyrus, T-pole temporal pole.

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