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. 2019 Aug 20;9:12098. doi: 10.1038/s41598-019-48510-9

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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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Brain regions showing a significant negative association between the subjective happiness score and fractional amplitude of low-frequency fluctuation (fALFF) value. (Left) A statistical parametric map (p < 0.05, cluster-level family-wise error corrected) for the group analysis of the fALFF map. The area is overlaid on the mean spatially normalized structural magnetic resonance images. The blue cross indicates the location of the peak voxel (x = 3, y = −72, z = 36). The red–white color scale indicates the T-values. (Right) A scatter plot of the adjusted fALFF values as a function of the subjective happiness score at the peak voxel. Effects of no interest (age, sex, full-scale intelligence quotient, and mean framewise displacement) were regressed out.