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. 2013 Jun 6;7:256. doi: 10.3389/fnhum.2013.00256

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Copyright © 2013 Lapenta, Minati, Fregni and Boggio.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in other forums, provided the original authors and source are credited and subject to any copyright notices concerning any third-party graphics etc.

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TDCS effects on surrounding electrodes. Bars mean standard errors. ○, after anodal tDCS, biological imagery was significantly different from non-biological imagery (p = 0.028); ●, anodal tDCS resulted in Mu ERD when compared to cathodal tDCS in biological imagery (p = 0.011); ▲, cathodal tDCS resulted in stronger Mu ERD on biological observation when compared to anodal (p = 0.023) and sham (p = 0.05) tDCS; and ■, anodal tDCS resulted in Mu ERS on non-biological observation when compared to non-biological imagery (p = 0.048).