“People say, 'I'm going to sleep now,' as if it were nothing. But it's really a bizarre activity. 'For the next several hours, while the sun is gone, I'm going to become unconscious, temporarily losing command over everything I know and understand. When the sun returns, I will resume my life.” This quote by George Carlin is a perfect description of the odd nature of sleep and dreams. Dreams are something that most human beings experience on a nightly basis. Because we all dream, the mysterious topic of dreams becomes something we are all interested in. It is an amazing concept that has us waking up feeling good at times and terrified at others. The documentary, “Why Do
1. Your body goes through 4 stages of sleep. REM (rapid eye movement) is the 4th stage and when you do most of your dreaming. “While you are dreaming, your body undergoes noticeable changes. Your adrenaline rises, your blood pressure increases, and you heart beats faster. Given this hyperactivity, it should be no surprise how someone with a weak heart can die in their sleep (dreammoods.com).” It usually takes 30-90 minutes to reach REM, a person goes in and out of REM 4-7 times a night. During REM your eyes rapidly move back and forth under the eyelids. Our bodies are completely immobile and muscles are relaxed. You may shift around in your sleep but when in REM you are completely still.
Then you will move into stage two which includes sleep spindles and K complexes. Sleep spindles are very short bursts of brain activity, and K complexes are single high voltage strikes of brain activity. Also, in stage two delta brain waves start to slow function of the brain preparing for stage three and four. Stage three and stage four i will talk about as one because they are very similar and do similar things. These stages are referred to slow wave sleep because your brain is in it’s slowest speed of function. In stage three you brain is between 20 and 50 percent delta waves, from 50 to 100 percent delta waves you are considered to be in stage four. While in stage four people may experience sleep walking and other muscular movement without knowing so. Noises as loud as 90 decibels may not be able to wake the person from sleep. During REM sleep which is after NREM sleep the brain is more active and alert. This is where most dreams occur because your brain is active but you are still sleeping. After the short 15 minute period of REM sleep you will start over with stage one of NREM these cycles normally take 90 minutes to complete. Activity during sleep can come at any point but is most common in REM or stage four of
Dreaming, although a substantial component of our nighttime lives, remains somewhat of an enigma due to the fact that it occurs while we are unconscious. The inaccessibility of the unconscious mind weakens full analysis and comprehension of dreaming which researchers have been attempting to accomplish. However, over the years many researchers have elucidated many mysteries about dreams, such as when we dream, why we dream, and what we dream about, in order to bring forth an understanding of dreams as well as identify
This stage does last longer than the previous one but only by 10 more minutes. In Non-REM 2, you have this weird and fascinating action happing in your noggin know as sleep spindles. These sleep spindles are bursts of rapid, rhythmic brain-wave activity. After this stage comes one of the best parts of sleep and the part that you’ll generally wake up covered in drool in. This happens to be Non-REM 3 which is often categorized as deep sleep. In this particular stage, we are welcomed by slow delta waves that our brain emits. When this stage has had it’s time to shine, which is 30 minutes, it is time to move onto the final
Dreams, one of the many dimensions in our mind, gives a lot of different information then we are use to having in the day. The subconscious mind that takes control when we sleep, takes care of our passive memories and holds the key to our lives. Dreams are what lead us to this key which unlocks the door to another type of wisdom. The farther we get
NREM stage one is the beginning of the sleep cycle. It is known as the transitional stage between being awake and being asleep. During this stage, your brain produces theta waves, theta waves are extremely slow brain waves. This lasts about 5-10 minutes. NREM stage 2 of sleep lasts about 20 minutes. During this stage, the brain produces sleep spindles which are bursts of rapid and rhythmic brain wave activity. This is when everything starts too slows down. NREM stage 3 is when your brain produces delta waves during this stage which are very slow and deep brain waves. This stage lasts about 35-45 minutes. REM sleep is most dreaming occurs during this stage. This stage has rapid eye movement, increased respiration rate, and increased brain activity.
In deep sleep there are no eye movement or any kind of muscle activity. This is when some children experience bedwetting, sleepwalking, and or has night terrors. In 2008 the sleep professionals eliminated the use of stage 4. And stages 3 & 4 are what most people experience. Slow waves sleep comes mostly in the first half of your sleep. (REM) is the second half. Walking may occur after (REM) if the walking period is long enough, the person may remember it the next morning. Infants spend almost 50% of their time in (REM) sleep. Adults spend nearly half of their sleep in stage 2, older adults spend less time in their (REM) sleep.
Fifth Stage REM Rapid-Eye-Movement Sleep, while in REM breathing rates, brain activity increases and decreases, and brain waves are faster and smaller. Paradoxical sleep or active sleep refer to REM the reason for this is because brain, body become heightened and muscle movements are restrained but can twitch this is so dreams are not acted out. REM can last for up to fifteen min. From stage one NREM to REM sleep has taken about ninety min. For the rest of the night’s sleep cycle, it bounces between NREM and REM.
The stages of non-REM sleep, stages 1–3, are defined by EEG activity. Slow-wave sleep in stage 3 is the deepest stage of sleep. Alertness consists of desynchronized beta activity (13–30 Hz); relaxation and drowsiness consist of alpha activity (8–12 Hz); stage 1 sleep consists of alternating periods of alpha activity, irregular fast activity, and theta activity (3.5–7.5 Hz); the EEG of stage 2 sleep lacks alpha activity but contains sleep spindles (short periods of 12–14 Hz activity) and occasional K complexes; stage 3 sleep primarily consists of delta activity. About 90 minutes after the beginning of sleep, people enter REM sleep. Thereafter, cycles of REM and non-REM sleep occur in periods of approximately 90 minutes. Muscle tone decreases throughout the stages, resulting in deepest relaxation and paralysis in REM sleep (Carlson & Birkett, p. 268).
Researchers that are from the Department of Neurology of Liege University Hospital recently manifested that, even during the deepest moments of sleep, non-REM sleep cannot be considered a stage of stable and perpetual brain activity reduction, but it can also be identified by periodic and transitory
Like in the other stages of sleep, when we doze off and transition into a more powerful, restful, and peaceful sleep is when stage 3 and 4 finally begins. So, during these stages, we are hit with the deepest parts of sleep and while we undergo high delta waves and it can occur after 30 or 40 minutes of deep sleep. Moreover, while stage 3 and 4 hold some similarity due to the nature of the high level of delta waves that are occurring throughout this stage, it allows the person to experience a wholesome and powerful sleep. Finally, during the process of REM stage, most dreams occur and brainwaves revert to being small and fast. In doing so, they consist of tons of beta waves, which can also be seen while being awake. Also, it increases the respiration rate and could cause brain
One third of a human's lifetime is spent sleeping, and six years is spent dreaming that is more than 2100 days. Dreams are series of images, ideas, emotions, and sensations that occur in the mind during certain stages of sleep. There are many myths based on the ideas of why the human brain dreams. Many believe that what happens in the brain at night is the experiences that the human body goes through during the daytime while the body is awake putting it all together into one's dreams while the body is at rest at night. However, reams affect, and are affected by, daily life.
Recent research has proven this to be false and that the brain is actually highly active during sleep. In fact the brain during REM sleep can be more active than when we are awake. J. Allan Hobson and Robert McClarley came up with the activation-synthesis model. They theorized that, “…circuits in the brain become activated during REM sleep, areas of the limbic system including the amygdala and hippocampus (the parts of the brain involved in emotions, sensations and memories) also becomes active” (Mastin). This is one theory of how and why dreams
This stage is believed to help people enter deeper stages of sleep (4). Stage 3 sleep consists of 20-50 percent delta activity and stage 4 sleep of more than 50 percents delta activity (4). Stages 3 and 4 are characterized as being slow wave sleep in addition to being the deepest levels of sleep. Approximately 90 minutes after being asleep, people enter rapid-eye-movement (REM) sleep (4). REM sleep consists of rapid eye movements, a desynchronized EEG, sensitivity to external stimulation, muscle paralysis and dreaming (4).