We are recruiting people for a confidential online screening survey of health and medical information. We are looking for volunteers who suspect they have Obstructive Sleep Apnea (OSA) who have not had a sleep study (or not had one recently) and who are not currently undergoing treatment (e.g., CPAP). The survey takes 15 minutes to complete, and covers:

Basic information, such as your age, height and weight;

• Brief medical history;
• Your mood and quality of life; and
• Whether you can safely enter an MRI scanner.

You will not be paid for the online screening survey.

If eligible, we will offer you an overnight sleep study to see if you have OSA. If you are diagnosed with OSA, we will invite you for a brain scan in an MRI machine, with no injections or radiation (2 hour scan time, plus 1 hour preparation). We may also invite you to do one or more of the following::

• Answer questionnaires (20-30 minutes);
• Perform physiological testing (1 hour);
• Using a smart-phone we provide, each day, answer questions, take your blood pressure and do other tests at home (20 minutes/day for 6 weeks/ 42 tests);
• Do a smart-phone based, stress reduction program (20-30 minute tests/day for 6-12 weeks/42-84 tests) or simple physical exercise (10 minutes/day) program for 6-12 weeks.

You will be compensated for each procedure you do ( scan $200; MRI physiological testing $100; home testing and programs up to $260). These procedures require visiting . Parking costs are covered. We will give UCLA you a copy of your brain images from the scanning. We may invite you MRI to do more procedures (follow-up surveys, sleep study), for which you will also be compensated.