Test Your Knowledge

The most common types of sleep studies include:

• Overnight polysomnograms. Tests that are conducted during the night hours, usually in a sleep center. They monitor physiological activity while patients sleep.
  
  
• Multiple sleep latency test (MSLT). Conducted in a similar method as a polysomnogram, but performed during daytime hours. The test is conducted to determine how quickly a person falls asleep during daytime hours, usually for several 20-minute naps.
  
  
• Maintenance of wakefulness tests (MWT). Measure a patient’s ability to remain awake in a dark and quiet environment.