Figure 3. Brain sites with significant positive correlations between MD values and SaO₂ delta scores in patients with OSA.

These sites included the frontal cortices (a), insular cortices (b), putamen (c), occipital cortex (d), mid-cingulate (e), parietal cortices (f), cerebellar vermis (g), temporal cortices (h), and occipital cortex (i). Color bar represents t statistic values (L = left; R = right). MD = mean diffusivity, OSA = obstructive sleep apnea.