Takeaway
Functional connectivity in the default mode network (DMN) correlates with apnea-hypopnea index (AHI), oxygen desaturation index (ODI) and nadir SaO2, but not sleep fragmentation, in people with obstructive sleep apnea (OSA).
Why this matters
Decreased functional connectivity in the DMN has been reported in people with OSA.
A better understanding of how hypoxemia affects functional connectivity and cognition in people with OSA, may guide future treatment strategies.