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. 2018 Oct 24;19(1):99. doi: 10.1186/s10194-018-0924-5

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© The Author(s). 2018

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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Fig. 2 — Polarity dependent effect of tDCS on trigeminal nociceptive processing. Visualization of tDC-stimulation induced BOLD-response alterations in trigeminal nociceptive processing (post-anodal vs. post-cathodal) superimposed on MRICONs ch2bet-template, thresholded at p_unc < 0.0005. Corresponding contrast estimates in the following order: 1. postcathodal, 2. postanodal and 3. postsham. Anatomical areas from top to bottom: bilateral amygdala, left cingulate cortex, bilateral basal ganglia, left motorcortex, left temporal lobe, left thalamus and right postcentral gyrus