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The Brain Atlas Concordance Problem: Quantitative Comparison of Anatomical Parcellations

Figure 6

Extraction of approximate higher order spatial relationships using bipartite graphs.

A: Initial bipartite graph constructed by connecting vertices on the left (corresponding to the H-O parcellation) with vertices on the right (corresponding to the LPBA40 parcellation) when the corresponding parcels overlap. The undirected edge weights were determined by the maximum conditional probability value for each region pair. The graph is fully connected. B: Final bipartite graph representation of the same parcellations after pruning all edges with weight less than 0.25. The graph is partitioned into 9 connected components (rendered in different colors); for each component, the union of regions on the left is approximately equivalent to the union of regions on the right.

Figure 6

doi: https://doi.org/10.1371/journal.pone.0007200.g006