REM sleep is our restorative sleep. We all need it to restore our bodies. Patients with Sleep Apnea often have a decrease in the amount of REM sleep they get but still go into REM as does everyone. You may not achieve REM every time you sleep especially when you are just taking a short nap. There may be nights that a Sleep apnea patient does not achieve REM but that does NOT mean they never have REM sleep. When someone who has Sleep Apnea achieves Rem stage the apnea events increase because the tension and mucsles relax causing the obstruction in the airway to get worse. In turn the body reacts to the lack of air by gasping, choking, moving until the obstruction releases long enough for the person to breathe again. This often brings the person out of REM stage and into a lighter stage of sleep or wake stage. Therefore REM is often reduced. Around 20% of our total sleep time a night in REM is consider normal. Most sleep apnea patients' Rem is considerably less than this.
REM sleep usually occurs in cycles during the last 5-6 hours of an 8-hour night's sleep. So how much sleep we get in this stage will depend on how much sleep we get for the night. During REM sleep, eye movements increase, heart rate increases, and the normal body processes also increase. It's during this stage that dreams occur, and it's also this stage that we're most likely to wake up in the morning (feeling refreshed). These REM periods last approximately 20 minutes and can occur between 4 and 6 times per a good night sleep. Unlike the non-REM stages, our major muscle groups don't move, so we won't sleepwalk or "jar" ourselves awake during REM sleep. There are different types of sleeps associated with the sleep cycle. It is important to get a full cycle of REM sleep. REM sleep involves active dreaming. People sometimes have up to five cycles of REM nightly.
When a person has been deprived of REM sleep for long enough they will not cycle through sleep patterns as a well rested person would. These REM deprived patients will enter REM sleep much more rapidly and will spend more time in REM sleep over the course of the night as their body attempts to "catch up" for the lost REM. This expedited process of entering REM is called REM rebound.
"By (the) night" and "for (the) night" are English equivalents of the Italian phrase per notte. The prepositional phrase often assumes the form per una notte ("for one night") or per la notte ("for the night") in Italian. The pronunciation will be "per NOT-tey" in Italian.
Depends on the age of the person, for adults it's approximately seven to eight hours per night. However you do have cycles during your sleep, these are "REM" and "non REM" sleep. These cycles last roughly ninety minutes each, not a great idea to wake abruptly from REM sleep cycle as this can cause you to wake up like the Gringe!
have more rem sleep than normal
You have approximately 4 to 6 dreams per night during a stage in sleep called REM (Rapid Eye movement). REM stages and the length of dreams early during sleep can last from 5 to 10 minutes. Stages later during the night can last for half an hour or more.To try to remember some of your dreams, set a timer to wake you up every 90 minutes. Waking up every 90 minutes will give you a better chance at remembering dreams that would otherwise go forgotten.
They occur during REM sleep, usually in the second half of the night
have more rem sleep than normal :)
20-25% of the time during the full period of sleep.
Yes they do. People with Sleep Apnea often have a decrease in stage REM therefore they may not dream as often. REM sleep is often considered our dream stage. It is also our restorative sleep. Just because you don't remember your dreams doesn't mean that you did not dream. If you wake during REM stage you will remember what you were just dreaming. If you do not wake during REM but wake in a different stage of sleep (example stage 3) then you probably won't remember having a dream.
you did not sleep enough the night before APEX :D