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Spearman (ρ) correlation between baseline FA values extracted from transcallosal ROIs and both baseline ARAT score and ARATpost for Responders (RESP, N = 13) and Non-Responders (nRESP, N = 17). ROIs were defined using Hofer segmentation, regions I, II and IV contain fibers projecting respectively into prefrontal region (region I), to premotor and supplementary motor cortical areas (region II), and to primary sensory cortex (region IV) (Hofer and Frahm 2006).
