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. 2022 Dec 30;12:77. doi: 10.1186/s13550-022-00949-0

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© The Author(s) 2022

Open AccessThis 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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 4 — VBM analysis with small volume correction restricted to the occipital lobe, showing the increase of gray matter volume in visual snow syndrome (VSS) patients compared to CON. SPM displayed at p_height < 0.001 uncorrected and K_ext > 200 voxels. Clusters are overlaid onto the average GM from the whole study population. Significance is shown with a T statistic color scale. Images are in neurological orientation