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. 2016 May 24;10:58. doi: 10.3389/fnana.2016.00058

FIGURE 3.

FIGURE 3

(A,B) The stem-based method. (A) The preparation of the tractogram, inspired from the postmortem dissection technique to selectively remove streamline groups not belonging to the long association pathways and (B) the procedure to delineate the stems of the IFOF and UF are shown on a single subject. Steps of the virtual dissection for the IFOF (B, first row) and UF (B, second row) with analogous images from a post-mortem dissection of the IFOF (B, third row): (i) Template regions used to remove select groups of cortical streamlines, (ii) window revealing the stem of the tract (dashed lines represent the coronal inclusion (gray) and exclusion (red) filtering slices), (iii) ROI drawn to encompass the stem of the tract, while in post-mortem dissection a red tag separates the IFOF stem from the dorsal claustrum and putamen. (C) Analogous steps from a post-mortem dissection of the IFOF (Sarubbo et al., 2013).