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. 2023 Aug 3;23(5):1291–1302. doi: 10.3758/s13415-023-01122-3

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© The Author(s) 2023

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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 2 — Study flow diagram. A) All participants completed three sessions separated by a break of 72 h. The three sessions were similar except for the type of tDCS (sham, right anodal, left anodal) delivered with counterbalanced order across participants. B) In each session, before the stimulation (pre-tDCS), participants filled in the PANAS-state form. Then, participants underwent the dot-probe task while receiving tDCS stimulation (lasting 20 minutes). After the stimulation (post-tDCS), participants completed the PANAS-state form again and the tDCS questionnaire