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. 2023 Aug 28;26(9):1584–1594. doi: 10.1038/s41593-023-01413-5

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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 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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Extended Data Fig. 10 — (a) Pupil size was measured for 3 sessions (sessions 7, 8 and 9, corresponding to Supplementary Fig. 2), see Methods. (b) Trial- and session-averaged pupil size dynamics for hit and miss trials, where shaded areas indicate the 95% confidence interval of the mean (across sessions and trials). The time-averaged pre-stimulus pupil size was not significantly different between hit and miss trials (two-sided t-test). (c) Population variance was very weakly correlated to pupil size across all sessions (both averaged across 500 ms pre-stimulus per trial) (two-sided Pearon correlation r = 0.12, p = 0.02). (d–f) Trial-averaged pupil size dynamics per session, where shaded areas indicate the 95% confidence interval of the mean (across trials). Pre-stimulus differences between hit and miss were not significant for any of the sessions (two-sided t-tests), although session 7 (panel d) almost reached the significance threshold (p = 0.053). (g–i) Population variance vs pupil size per session. Two-sided Pearson’ correlation was significant for only one of the sessions (session 7).