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. 2015 Nov 27;9:441. doi: 10.3389/fnins.2015.00441

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Copyright © 2015 Mohammadi, Carey, Dick, Diedrichsen, Sereno, Reisert, Callaghan and Weiskopf.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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(A) Comparison between MR (black) and ex-vivo (red) g-ratio measures in the corpus callosum. (B) Following the parcellation of the corpus callosum by Stikov et al. (2014a) for ex-vivo histology (top row), we calculated the group mean MR g-ratio in 8 different region of interests (ROI, bottom row; error bars indicate standard deviation across ROI) and compared them to the corresponding ex-vivo g-ratio reported by Stikov et al. (2014b) (error bars indicate standard deviation across 3 different samples within each ROI). The MR g-ratio measures followed the trend of the ex-vivo measurements (A). Note that the ex-vivo measurements of the g-ratio were obtained from a macaque monkey.