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. 2016 Jun 6;10:270. doi: 10.3389/fnhum.2016.00270

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Copyright © 2016 Boonstra, Nikolin, Meisener, Martin and Loo.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution and 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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EEG mean frequency before and after active tDCS and sham. The mean frequency is averaged across all EEG channels. Error bars indicate the standard error and asterisks changes that are statistically significant (P < 0.05).