We then performed correlation analyses, regressing power or connectivity values on symptom severity in hypervigilance. Confirmatory analyses (constrained to the regions identified in the main contrasts) revealed negative associations between hypervigilance and α power in the precuneus/superior parietal lobule at S-RS (39 voxels; peak: −20, −75, −55; r = −0.49, p < 0.005; Fig. 4A) and the DMN at M-RS: PCC (13 voxels; peak: 5, −45, 45; r = −0.28, p < 0.05) and mPFC (50 voxels; peak: −10, 65, −15; r = −0.30, p < 0.05; Fig. 4B). Whole-brain regression analysis further revealed negative associations with α power in the ventral VC at S-RS (left inferior temporal gyrus: 13 voxels; peak: −55, −5, −40; r = −0.40, p < 0.005 whole-brain corrected; Fig. 4A). There was no significant correlation between hypervigilance and α connectivity (ps > 0.20).
