1. A method for visualizing brain network connectivity, comprising: receiving image data corresponding to a brain of interest; constructing a tree data structure from the image data, wherein the tree data structure comprises a plurality of network nodes, wherein each network node is connected to a root of the tree data structure; rendering a ring of a radial layout depicting the tree data structure, wherein a plurality of vertices may be traversed from the top to the bottom; duplicating at least one control point for spline edges sharing a common ancestor; bundling spline edges by applying a global strength parameter β; and displaying a visualization of the brain network connectivity in the radial layout including bundled spline edges.