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Correlation analyses with adjusting age and BMI between FA values and neuropsychological parameters in OSA group. (A) Reduced FA values in right uncinate fasciculus were significantly correlated with impaired performance of digit span backward, and (B) Low FA values in right uncinate fasciculus were associated with impaired performance of Rey Complex Figure Test (p < 0.05). BMI, body mass index; FA, fractional anisotropy; OSA, obstructive sleep apnea.
