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. 2022 Oct 6;16:956315. doi: 10.3389/fnsys.2022.956315

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Copyright © 2022 Soleimani, Towhidkhah, Oghabian and Ekhtiari.

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) and the copyright owner(s) 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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Self-reported craving. Self-reported craving based on visual analog scale [VAS (0–100)] in four main time points; pre-tDCS imaging (before the first scan), before tDCS (after the first scan), after tDCS (before the second scan), and post-tDCS imaging (after the second scan). Bars show mean values, and error bars show the craving score’s standard deviation (SD). The craving score was significantly (P < 0.05) decreased from before to after tDCS only in the active tDCS. The blue color is related to the sham condition, and the red is related to active tDCS.