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. 2020 Mar 26;10:5528. doi: 10.1038/s41598-020-62478-x

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© The Author(s) 2020

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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ERP responses to painful and non-painful pictures with high and low attractiveness in the Pain Judgment Task. ERP waveforms (top panel), bar charts and scalp topography distributions (bottom panel) elicited by non-painful (solid) and painful (dotted) pictures with high (red) and low (blue) attractiveness. Electrodes used to estimate ERP amplitudes were marked using the white squares on their respective topographic distributions. Data in the bar chart were expressed as Mean ± SEM. ns: p > 0.05; *p < 0.05, **p < 0.01, ***p < 0.001.