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Treatment response of fALFF (mean±sem) and correlation between fALFF changes and migraine frequency changes (FDR corrected). (A) Significant increase of fALFF in right TCC/RVM after tVNS treatment. (B) Location of TCC/RVM, (C) a positive correlation between right TCC and the reduction of migraine attack frequency (r = 0.433, p = 0.021). R, right; RVM, rostral ventromedial medulla; TCC, trigeminal cervical complex.
