PRAGMA: Interactively Constructing Functional Brain Parcellations

Abstract

Figure 1: PRAGMA is an interactive tool for constructing scan-specific brain parcellations from mainstream atlases. Its interface incorporates five complementary visuals: (A) abstract view of the hierarchical clustering of the brain through a node-link diagram, (B1) similarity of fMRI signal time-courses represented with a line plot with a shaded confidence interval, (B2) homogeneity glyphs within nodes, (C1) functional connectivity depicted as a chord diagram and (C2) anatomical location of parcels viewed on an orthographic template.