Essen Medical Associates' Sleep Study Center is a full-service sleep disorders center that specializes in the evaluation and treatment of disorders of sleep and wakefulness in adults. Our facility is fitted with state-of-the-art equipment for overnight sleep monitoring. Patients of our sleep study center typically undergo a noninvasive test which records your sleep pattern, breathing, oxygen level, heart rate and rhythm, and muscle tone while you sleep overnight in a private hotel-like room at our facility.