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Functional map based registration improves functional alignment. Group-average functional maps in the MSM-Sulc registered space (sulcal depth based registration) were blurry (left column). Group-average functional maps became sharper after each iteration of the Spherical Demons (SD) algorithm driven by the proposed functional maps. The top row shows the registration driven by the functional density map, while the bottom row shows the registration driven by the functional edge map.
