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. 2021 Sep 7;21:342. doi: 10.1186/s12883-021-02374-7

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© The Author(s) 2021

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/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.

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Fig. 1 — Brain regions of significant fALFF increases in migraine patients without aura compared to matched controls are rendered on the axial template images of the standard MNI brain (A). The left side of each MR image is the left side of the brain. The color bar indicates t-statistics. Mean (bars) and standard deviation (whiskers) for the fALFF of the brainstem and bilateral thalamic clusters in 31 controls and 44 migraine patients (two-sample t-test, all p < 0.001) (B)