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. 2018 Oct 26;8:15868. doi: 10.1038/s41598-018-33776-2

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© The Author(s) 2018

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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Electrode coverage and regions of interest (ROIs). (A) The spatial extent of a total of 1,756 analyzed electrodes are indicated on the FreeSurfer’s average brain images¹⁷. (B) The boundaries of ROIs of the present study are denoted with yellow lines. MFG: middle-frontal gyrus. IFG: inferior-frontal gyrus (summation of pars opercularis [BA 44] and triangularis [BA 45]). ORB: orbitofrontal region (summation of pars orbitalis [BA 47] and lateral-orbitofrontal gyrus). iPreCG: inferior-precentral gyrus. iPoCG: inferior-postcentral gyrus. SMG: supramarginal gyrus. STG, MTG, and ITG: superior-, middle-, and inferior-temporal gyrus, respectively. FG: fusiform gyrus. The number of analyzed electrodes in each ROI was provided in Table 1.