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. 2019 Dec 12;9:18931. doi: 10.1038/s41598-019-54958-6

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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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Spatial-frequency tuning from the optomotor response of visually naïve and experienced larval zebrafish at 7 dpf. The top row shows spatial-frequency tuning functions (mean ± SEM) at stimulus speeds of (a) 25 °/s (b), 50 °/s, and (c) 100 °/s. Black solid, red dashed, blue dashed, red solid and blue solid lines show functions for naïve, 1-session static, 1-session moving, 2-session static and 2-session moving groups, respectively. Tuning functions are a three-parameter log-Gaussian, fit by minimising the least-squares error. The bottom row shows normalised amplitude at stimulus speeds of (d) 25 °/s (e), 50 °/s, and (f) 100 °/s. Error bars show the 95% confidence intervals. P < 0.05 after Bonferroni correction was considered to be statistically significant.