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ALFF alterations in OSAHS group. Significantly increased ALFF values in the right inferior frontal gyrus orbital part, the right median cingulate and paracingulate gyri, the right inferior frontal gyrus triangular part, the right insula, and the left superior frontal gyrus dorsolateral (cluster >389 voxels, P < .05, AlphaSim corrected); ALFF = amplitude of low-frequency fluctuation, OSAHS = obstructive sleep apnea hypopnea syndrome.
