Study of Disrupted Sleep in Somali Americans

24-hour ambulatory BP measuring device and blood pressures will be measured every 20 minutes to half hour

Measurements will include electroencephalogram, electromyogram, electrooculogram, electrocardiogram, breathing patterns of chest and abdomen, nasal and oral airflow and oxygen saturation. Sleep stages and apneas will be scored in accordance with validated American Academy of Sleep Medicine standards.