If you have problems with snoring, difficulty staying awake, difficulty sleeping at night, or twitching limbs during sleep, it might be a good idea to be checked for sleep apnea. Sleep apnea tests are done to find out what is causing your sleeping difficulties. They are recorded while you are sleeping, to discover what happens during your sleep. These studies can also determine if you have a problem with sleep stages. Sleep cycles alternate 4 to 5 times during one’s slumber. If there is a change to this, it could affect the way you sleep.
Sleep study tests can monitor your body functions during sleep. This includes your brain activity, eye movement, oxygen levels, heart rate, and much more. They can also detect if you are breathing through your nose or mouth through chest or belly movements. Other sleep tests can determine how long it takes you to fall asleep and enter the REM cycle, as well as how many times you are awake during the night.