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. 2018 Oct 4;8:14819. doi: 10.1038/s41598-018-33202-7

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© The Author(s) 2018

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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Raw data and two methods to process eye-blink artefacts (a) Example of raw data (blue curve): temporal evolution of pupil horizontal diameter (in pixels) from the right eye of one participant, superimposed with global standard trials in green and global deviant trials in red. (b) Zoom on a trial with an eye blink artefact processed with two different methods. (c) With the trial rejection method a trial was rejected if the difference between two successive temporal points was larger than 200 pixels. (d) With the trial interpolation method (see details in the text) any identified artefact (blue) was corrected using a cubic interpolation (bottom magenta curve).