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. 2019 Oct 28;9:15414. doi: 10.1038/s41598-019-52124-6

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© The Author(s) 2019

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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Illustration of the task. Participants were instructed to lift the same finger as the hand in the video when a ‘1’ is displayed (Congruent Condition) and to lift the other finger when a ‘2’ is displayed (Incongruent Condition). The left side illustrates the Individual Goal Condition, in which the lights never turn on. The right side illustrates the Joint Action Goal Condition, in which the lights are turned on when two conditions are fulfilled: the number cue (‘2’) indicates that the participant should perform the ‘incongruent’ action, and the participant correctly does so.