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. 2017 Jun 15;7:3607. doi: 10.1038/s41598-017-03859-7

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© The Author(s) 2017

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as 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. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Effects of tACS on nodal efficiency. (A) Bilateral and medial views of nodal efficiency changes (represented by average of network density 0.2–0.3) in theta band, gamma band, and sham tACS groups. Hot and cool colors denote increase or decrease of nodal efficiency, respectively. (B) Significant group difference of nodal efficiency. FDR-corrected p-values were obtained by a permutation test (iteration: 5000), and multiple comparison corrections were applied at the node level. (C) Nodal efficiency changes in dorsal anterior cingulate cortex (dACC) are shown in average (thick line) and individual (light thin line) levels. Error bars denote standard error. (D) Relationship between nodal efficiency change of dACC and emotional state change.