In this study, we want to see if testing for obstructive sleep apnea (OSA) at home is better than testing in a sleep lab for people with memory problems. OSA is when your breathing stops and starts during sleep, which can make memory and thinking problems worse. The study is important because the usual test, called in-laboratory polysomnography (iPSG), is hard for some people with memory issues. We want to see if home sleep apnea testing (HSAT), which is easier and cheaper, is a good alternative. We will look at how many people finish the tests, how much it costs, and if they feel better after using a breathing machine called CPAP.

• The study lasts 6 months.
• Participants may need help from a caregiver.
• People with severe lung or heart problems can't join.