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. 2019 Aug 9;9:11574. doi: 10.1038/s41598-019-47959-y

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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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Finger sequence task. (A) Experimental setup. Participants were instructed to put the index, middle, ring and little fingers of both hands on the designated keys of an enlarged computer keyboard. Each 8-element sequence was shown on the computer screen and the participants pressed the corresponding keys in a sequential order as fast, accurately, and evenly as possible. (B) Three sequences used in the assessment.