Have you ever heard the saying “I am shutting down for the night?” It is a common misconception throughout the world that the body shuts down during sleep. However, sleep is the period of time in which the brain becomes extremely active. There are four stages of sleep that our bodies go through each night. During each of these stages specific parts of the brain complete tasks that will help to improve our daily lives. There are several parts of the brain that are active while we sleep and each part performs a specific job. During the time of which we spend sleeping, there are eight main parts of the brain that start their day of work. The hypothalamus is a “peanut-sized structure deep inside the brain.” The hypothalamus consists of nerve cells, …show more content…
These stages are stage one non-REM sleep, stage two non-REM sleep, stage three non-REM sleep, and REM sleep. “Each is linked to specific brain waves and neuronal activity.” When we first start to doze off we enter stage one non-REM sleep. This stage lasts five to ten minutes and sleep during this stage is relatively light. During this time our heartbeat, breathing, and eye movements decrease. Our muscles begin to relax and occasionally twitch as well. The brainwaves at this time also begin to slow from their normal daytime patterns. The waves become very uniform and are typically categorized as alpha and theta waves. When we enter stage two non-REM sleep our breathing and heartbeat slow even more, along with the muscles relaxing even more than in stage one. At this time our body temperature decreases and eye movements come to a complete stop. The activity of brain waves during this time decreases, but is interrupted at times by small bursts of electrical activity that are very rapid. Sleep specialist refer to these small bursts as sleep spindles. Stage two of non-REM sleep is the stage that is repeated the most throughout the night and it lasts for about ten minutes each time. Stage three non-REM sleep is the stage in which deep sleep occurs. This stage lasts for approximately thirty minutes, but takes a longer time to complete during the first half of the time we spend sleeping. During this stage our …show more content…
One of the most common brain activities during sleep is dreaming. Scientist still to this day do not fully understand why we dream or what dreams are exactly. “Some experts suggest that dreams represent the replay of the day’s events as a critical mechanism in the formation of memories, while others claim that the content in dreams is simply the result of random activity in the brain.” It is known that visually intense dreaming occurs most commonly in the REM sleep stage. Dreaming causes the brain to become very active, and not only at displaying the images we see during our dreams. A major part of the brain activity that takes place during dreaming is temporarily paralyzing our muscles. When we enter REM sleep our brain sends a message to the spinal cord telling it to “turn off” our motor neurons. This happens so that we do not act out our dreams. Another job that the brain completes during the night is disposing of unimportant information. On the opposite side, the brain also remembers important information that we have learned. “Experts call this consolidation, and it’s important for protecting against further information loss as well as boosting your ability to learn while you’re awake.” Storing important memories is another task that the brain takes on. Our brain chooses memories that it thinks are most important to us and intensifies those experiences in our mind. While the brain is
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Rather than normal sleep, scientists decided they were in what is called REM sleep. During REM sleep, also known as rapid eye movement, is when one become sexually aroused, one becomes limp, eyes moved around, heart break and breathing
Sleep and consciousness are controlled and regulated by the reticular formation. This is important so the monster will feel pain and be able to sleep. The thalamus relays sensory and motor signals making
When it comes to sleep, as many already know, there are various stages. However, what is rarely covered is the stages other than REM (rapid eye movement). The first stage encountered on a nightly basis is that of NREM 1 (stage 1). In this stage, our bodies essentially start to slow down various bodily functions such as breathing and pulse (“sleep”, n.d). Next comes NREM 2 (stage 2).
Do dreams have an evolutionary function? In this essay I will discuss Flanagan’s reasons for believing consciousness is an adaptation, I also will discuss why sleep is an adaptation and his stance on dreams being spandrels. And I will end with my opinion on why dreams may or may not be significant based on Flanagan’s theory and the treat simulation theory. I will also discuss the reasons why or why not dreams may have an evolutionary function.
Sleepless in American is a National Geographic documentary on the lack of sleep Americans are receiving each night. The film starts with the statistic that “40% of American adults are sleep deprived” and followed with different effects of sleep deprivation such as: weight gain, delayed reaction time, depression, anxiety, speeds the growth of cancer, and has been linked to Alzheimer’s disease. Although, there is no scientific evidence to support the need for sleep, it is an important process that allows our bodies to function properly. Several sleep studies have been performed to understand the effects sleep deprivation has on a person. The participants of the sleep trial only received four hours of sleep per night.
Topic: How to fall asleep faster Organizational Patterns: Topical Specific Purpose: In order to help students live healthier lives and feel better in the morning. Primary Audience Outcome: I want my audience to learn new techniques and ways to help provide a good night’s rest. Thesis Statement: Providing ways to show students on how they can both physically and mentally prepare themselves when they head to sleep.
1. Introduction Starting from the ancient times humans has always been interested in strange phenomena of sleeping and dreams. Dreams can be explained psychologically as images of subconsciousness and feedback of neural processes in human's brain. For most of us, dreaming is something quite separate from normal life. When we wake up from being chased by a monster, or being on a date with a movie star, we realize with relief or disappointment that "it was just a dream."
That’s correct, sleep isn’t just sleep from the moment you fall asleep to the time you wake up. In between, you go through four different stages, all of which are important, yet some of which have a crucial role in regenerative sleep. During the night, your body will cycle through the following stages: The stage of sleep What happens during this stage? N1 You feel almost half asleep during this stage and it’s the moment where you are still somewhat aware of your surroundings, but when you start slowly losing this awareness. Often during N1, your body can make involuntary movements and you might feel your legs or arms jerking and twitching.
The darkness of night unveils the hidden cove of possibilities that awaits us in sleep. For some, sleep provides the much needed distraction and replenishment needed to perform our daily routines. As we curl up under the security of our favorite blanket, snuggle against the fluffiness that is our pillow, and as we slowly begin to shut our eyes, we succumb to the beauty that is sleep. Without hesitation we accept and welcome our nightly slumber. We don’t question our vulnerable state as we lay down in bed.
Sleep deprivation is the lack of sleep needed to function to full potential. While college is known for staying up all night, and cramming for exams, this term of sleep deprivation is starting to take a serious toll. Over the years the sleeping patterns of students attending college and universities has changed dramatically. Studies show that as time goes on the average night of sleep students are getting is decreasing drastically (Jensen, 2003). The way students are falling into this lack of sleep are by forming an irregular sleep-wake cycle, which consists of getting little to no sleep during the week, then on weekends catching up on all the missed sleep.
Sleep can be defined as the “periodic, natural loss of consciousness” (Myers & Dewall, 2015, p. 100). It could also be defined as “a recurring state of relaxation that is characterized by an altered state of consciousness, inhibited sensory activity, muscular inhibition, and severely reduced interaction with outside entities”(Alleydog, 2018). A concrete answer to the question of why exactly we sleep has yet to be answered by scientists, but there are a number of theories. One of the earliest theories about why we sleep is the inactivity theory. It is also referred to as the adaptive theory or the evolutionary theory.
THE IMPORTANCE OF SLEEPING WELL Hello everybody, I’m going to speak about the most time-consuming activity in our lives: sleeping. As a matter of fact, we usually don’t pay much attention to the quality of our sleep, in spite of influencing a big deal our performance during the day, our health and well-being, in other words, our quality of life. That’s the reason why I would like to introduce some interesting material to understand better this important though disregarded necessity.
In humans, children need a lot of sleep to help them grow healthily. But sleep is the occasion for another critical function in the adult brain - and it's not just a well-deserved rest from the stresses and strains of everyday