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Differences in global properties of patients with MDD before and after taVNS treatment based on AUC values. (A) Eglob in patients with MDD; (B) Lp in patients with MDD. Abbreviations: Eglob, global efficiency; taVNS, transcutaneous auricular vagus nerve stimulation; Lp, characteristic path length; MDD, major depressive disorder; AUC, area under the curve. *** p < 0.001.
