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Receiver operating characteristic (ROC) of discriminating GAD patients from HCs by using FCD values in the significant group difference regions. (A) S-FCD values in the significantly different regions; (B) L-FCD values in the significantly different regions; (C) a combination of S-FCD and L-FCD values in the significantly different regions. In (A–C), red, blue, and purple line represent the FCD in FOI-N, FOI-S, and FOI-N+FOI-S, respectively.
