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. 2021 Aug 26;15:729218. doi: 10.3389/fnins.2021.729218

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Copyright © 2021 Tian, Guo, Yin, Xiao, Ha, Chen, Wang, Lan and Zeng.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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The joint effects between the headache intensity responders, frequency responders, and non-responders (between pre- and post-acupuncture). (A) Significantly decreased and increased FCs were found between the headache intensity responders and non-responders compared with post-acupuncture, and the color bar represents the t-value of FC. (B) Headache intensity responders manifested significantly increased FCs between Amyg and MFG, Amyg and INS, IPL and SFG, IPL and MFG, Hipp and SFG, Hipp and MFG, Hipp and INS, and CG and SFG compared with posttreatment. Red connection lines represent an increased FC before acupuncture than post-acupuncture patients with MwoA. (C) Significantly decreased and increased FCs were found between the headache frequency responders and non-responders compared with post-acupuncture, and the color bar represents the t-value of FC. (D) Headache frequency responders showed significantly increased FC within Tha subregions compared with posttreatment. Red connection lines represent an increased FC before acupuncture than post-acupuncture patients with MwoA. MwoA, migraine without aura; responder, patient with significant clinical improvement; non-responder, patient with nonsignificant clinical improvement; FC, functional connectivity; L, left hemisphere; R, right hemisphere; SFG, superior frontal gyrus; MFG, middle frontal gyrus; SPL, superior parietal lobule; IPL, inferior parietal lobule; INS, insular gyrus; CG, cingulate gyrus; Amyg, amygdala; Hipp, hippocampus; Tha, thalamus.