Non-REM or deep sleep is the most restoring of the two and we have a routine heart rate and breathing and sleep silently. In babies, this is called “peaceful sleep”, although babies still have periodic body jerks (which might cause quick wakings, specifically before 6 months of age) and make sucking motions. Around 2-3 months non-REM becomes.
Signs of Baby Deep Sleep
4 stages: drowsiness, light sleep, deep sleep and even much deeper sleep. Unlike adults, kids go through these stages really quickly indicating that they can be in deep sleep in simply a matter of minutes. Non-REM sleep enables our body to charge and is necessary for a baby’s healthy physical and mental development.
Your baby requires a lot more sleep than you do. Over a 24-hour period, the typical newborn sleeps for 16 hours. Even at three months, your baby will need to sleep for about 15 hours during 24 Hr.
* Gina Ford thinks that the day time sleep issues (e.g. short naps) that lots of babies start to experience around 2-3 months are due in part to the newly establishing sleep cycle which often leads babies to wake up after sleep transitions. This is especially true if baby is used to sleeping in a day time environment or needs outside help to get to sleep (see sleep prop/associations).
Just before we reach deep sleep we often have a body jerk (also called a hypnagogic startle) which is a typical event however might awaken us. Signs that you have actually gone into deep sleep include slowed, more shallow breathing and a relaxed body. Deep sleep is likewise sometimes accompanied by sweating and it is really challenging to wake somebody up from. If there is an important stimulus it we will wake us up during this stage of sleep but we will be confused and have foggy thinking, although this won’t be as noticable as it would be if we were awaken at this time without an essential stimulus.
REM or light sleep is where we dream (yep, perhaps even babies) and our metabolic and brain functions are very active. Breathing and heart rate are irregular but our body generally stays still because most impulses that are going to the muscles are blocked after a baby reaches 6-12 months of age. Prior to this time babies walk around a lot and make sounds during this sleep stage which is why it is called “active sleep” in newborns. Rapid Eye Movement is much more prominent in babies taking up 50% of their bedtime (80% in a premature baby). It reduces to 25% by the time they reach preadolescence/adolescence. It is believed that REM sleep might be more popular in babies so that they have more time to practice motor abilities, consisting of breathing, during their sleep. It also may be more prominent to enable more time to process daytime experiences and move things from short-term to long term memory, though there is not firm evidence for this yet.
* A newborn gets in REM sleep (light sleep) immediately until around 3-4 months when he enters non-REM sleep first like a grownup.
* We cycle in between non-REM and Rapid Eye Movement while we sleep (typically have 1-2 periods of non-REM followed by a Rapid Eye Movement cycle) in addition to have occasional, quick awakenings that most commonly follow non-REM cycles. When we have these awakenings we normally just go right back to sleep without even keeping in mind getting up as long as everything appears regular to us. This is where numerous babies and children struggle if they are not capable of falling asleep on their own (always held to sleep, nursed to sleep etc). For additional information on this see Sleep Props/Associations and Sleep Transitions.
* Adults typically spend the first few hours of night sleep in deep (non-rem) sleep followed by alternating periods of light and Rapid Eye Movement with children generally having another duration of deep sleep in the early a.m (see sleep transitions to learn more on this).
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