How Does Sleep Affect The Brain

There are many different stages of sleep such as N1, N2, N3, and REM sleep. N1, N2, N3 are known as Non-REM sleep. There are two kinds of sleep which are REM AND NREM, or Non-REM sleep. Sleep is recorded using a polysomnography and brain wave activity is measured using an electrocephalograph. It is said that you will spend 32 years of your life sleeping.

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

Dreams during REM sleep are usually more vivid, detailed, longer, and are way more bizarre than those in non-REM sleep. Nightmares only occur during REM sleep, as night terrors only occur in non-REM sleep. While dreaming in the REM sleep cycle, the voluntary muscles in the body become paralyzed, this is called sleep paralysis. This is why you might not be able to run or move during some of your dreams in the REM sleep cycle. Sometimes this sleep paralysis affects people’s breathing while they sleep, which in result, causes them to snore and have other breathing problems. Some people suffer from REM behavior disorder, which is a rare disorder in which the brain mechanisms that inhibit voluntary muscles fails. This allows the person to get up and act out their nightmares.

We know that brain is the part of our body that never sleeps. We know that when we sleep our brain is very active. Sleep affects our daily activities. Our functional abilities, physical and our mental state affected in many ways from our sleep. There are still many unexplored areas now science is beginning to understand and relevant to the effects of sleep in our lives. Sleep is controlled by groups of neurons found in the brain stem. These neurons produce chemicals, such as serotonin and norepinephrine, which belong to the class of neurotransmitters. Whether you sleep or awake, controlled by neurotransmitters. The same substances regulate and which parts of the brain will operate continuously while you sleep. Another substance called adenosine

Sleep affects the body in hundreds of ways and just to name a few, it repairs tissues, cleans the body of chemicals, and replaces neurons. After closing your eyes, you enter BREM, which stands for “before rapid eye movement,” your body slows down most bodily functions such as breathing and pulse rate to preserve energy while sleeping. The most important part of sleep is REM or “rapid eye movement,” which is the part of sleep where neurons are replaced and repaired, inadvertently making dreams. REM also completely freezes your body or well shuts down the nervous system, to prevent you from walking around when dreaming. Sleep overall is an extremely important part of life as it helps the body.

Dreams during other sleep stages typically are more ordinary, like dreaming that you are getting dressed or making coffee. Dreams during REM sleep are more likely to be remembered because they are weird and exciting. Overall, we can dream in REM or non-REM sleep, but we can also have REM sleep without dreaming.

At the beginning of sleep, our minds are relatively active, conscience, and producing beta waves, which are small and fast. The brain begins to produce alpha waves when it relaxes and starts to slow down. At this point, it is possible to have lucid or strange events called hypnagogic hallucinations, which can be responsible for you having episodes of seeing and hearing things as you are falling asleep or sudden

Sleep is one of the most important needs that naturally is daily develop in our body, the brain plays a huge role in the sleep process since it doesn't power off, while the person is sleeping.Also, the brain has the ability to block messages leaving you paralyzed, except for your eyes. There are four important stages in the sleep process, the first one is NREM-1 which take function when the body is relax and feel sleepy, in this stage you can experience hypnagogic sensations that is when you feel you falling while asleep, the second one is NREM-2 that involves sleep spindles, and in this stage you can be asleep but can easily be awakened. The third stage is NREM-3 is the start of deep sleep and is responsible of fragmental dreams.The fourth

Does REM sleeps physiological features has a relationship with specially and sort of dreams? This question was answered by early studies reports which had proved that there is a positive correlation between REM periods of sleep and dreams which are more effective and sentimental (Alan S. Eiser, 2005, Physiology and psychology of dreams). This subject tells that physiological characteristics of REM stage of the sleep are directly related with dreams that the person experiences in that stage. On the other hand, there is a relation between NREM and REM sleep characteristics and wakefulness. These similar characteristics indicate that how physiological cases have almost same activity level with wakefulness situation in the REM sleep. According to National Academy of Science, REM sleep causes an increased risk of having hearth attack because of the considerably high hearth rate and blood pressure compared to wakefulness. Also, sympathetic-nerve activity shows a rise in REM sleep while is decreasing in NREM sleep. Cerebral blood flow and metabolic rate reduce in NREM sleep; however, just like sympathetic-nerves they come up with a substantially level to compare wakefulness

There are five stages of sleep: four stages of NREM (Non-REM) sleep, also called SWS (Slow-Wave Sleep), and one stage of REM (Rapid Eye Movement) sleep.

During a single night of sleep, a healthy adult goes through multiple different stages which repeat themselves irregularly. Therefore, sleep involves REM (rapid eye movement) sleep and nREM (non rapid eye movement) sleep, which subdivides in stages 1, 2, 3 and 4.

The second sleep stage is accompanied by brain waves becoming slower and eye movement stops with occasional rapid wave bursts. The third sleep stage, is with faster, smaller waves with extremely slow waves that appears interposed. At the last stage delta wave is emitted (smaller waves that appear interposed with slow wave).

Sleep was believed to be a passive state in the past. However, sleep as it unfolds is anything but a passive process. The brain’s activity is as complex as during wakefulness, never resting during sleep. Furthermore, sleep is indispensable for normal brain growth in early life. [1]

 Sleep is not uniform activity, but one produced of different brain waves throughout the night.

Rem stands for rapid eye movement, during REM sleep neutrons in the brain, specifically in the occipital cortex and brain stem regions, are more active during REM sleep than during waking hours or compared to non-REM sleep. While this is