Sleep studies are tests that records the body activities during sleep. The studies are done to find out causes of sleep problems and problems with different stages of sleep. The two primary categories of sleep are non-rapid eye movement (NREM) and rapid eye movement sleep (REM). Normally 4 – 5 series of NREM and REM make up a night’s sleep. A change in this cycle makes it hard to sleep soundly. Sleep studies can also help to rule out:
- Sleep related breathing disorders
- Sleep related limb movement disorders
- Problems sleeping at night (insomnia): caused by stress, depression, hunger, physical discomfort, or other problem
- Sleep disorders that cause extreme daytime tiredness
- Problems with night-time behaviours, such as sleepwalking, night terrors or bed-wetting
- Grinding of the teeth during sleep
Common Sleep Studies
Simple Sleep Study: It is a simple sleep study done within the home premises.
Polysomnogram: Polysomnography records body functions during sleep like brain activity, eye movement, oxygen and carbon dioxide blood levels, heart rate, breathing rate, flow of air through mouth and nose and snoring.
Multiple Sleep Latency Test (MSLT): The MSLT measures how long it takes a person to fall asleep. It also determines whether REM sleep appears upon falling asleep.
Maintenance of Wakefulness Test (MWT): This test measures whether a person can stay awake during a time when he or she is normally awake.