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Correction of Distortion in Flattened Representations of the Cortical Surface Allows Prediction of V1-V3 Functional Organization from Anatomy

Figure 2

MSD simulation warps the flattened cortical surface to register data to the algebraic model.

(A) The magnitude of the warping of each vertex on the flattened cortical surface. The Hinds et al. V1 border [7] is marked by the dashed black line (throughout). (B) The direction of warping induced by MSD simulation upon each vertex from the original cortical surface atlas space (fsaverage_sym). Vertices with distortion magnitudes below 0.01 rad are plotted in unsaturated colors. (C) The flattened patch of the cortical surface atlas (fsaverage_sym) with sulcal curvature shown in light and dark gray. Regions V1, V2, and V3, as predicted by our method in the corrected topology then projected back to surface atlas space, are tinted red, green, and blue respectively. (D) The flattened cortical surface of the corrected topology with sulcal curvature shown in light and dark gray. A line plot of the algebraic model (Fig. 1C) to which the MSD simulation registered the functional data is shown. Regions V1, V2, and V3 are tinted as in panel C.

Figure 2

doi: https://doi.org/10.1371/journal.pcbi.1003538.g002