What happens to our brain every time we sleep? When an alarm occurs

Sleep is essential for good health. In fact, we need sleep to survive. Just like we need food and water. So it is no wonder that we spend about a third of our lives sleeping. Even when we sleep, our brains continue to work to keep us alive. It ensures that our heartbeat and breathing stay on track. It washes away the waste accumulated during the day and sorts and archives our memories. A new study suggests that you do all this and more while monitoring your surroundings to detect any danger.

What happens in your body and brain while you sleep

You may think of sleep as the negative moment of the day when nothing is done on the list. The brain and a few other systems in the body see it completely differently. The brain is actually very active during sleep, doing important things. It just doesn’t rest. And if we don’t sleep, experts say, we don’t function as well as we should. Everything from learning to mood to the risk of getting sick and becoming obese can be upsetting. Over time, research has shown that many biological processes take place during sleep. For example, the brain stores new information and removes toxic waste. Nerve cells communicate and reorganize, which supports the healthy functioning of the brain. The body repairs cells, restores energy and releases molecules such as hormones and proteins. These processes are essential to our overall health. Without them, our body cannot function properly. Let’s take a closer look at why we sleep, along with what happens if we don’t get enough sleep.

Of ce slept?

Not much is known about the purpose of sleep. However, it is widely accepted that there is no single explanation for why we need to sleep. Probably necessary for several biological reasons. So far, scientists have found that sleep helps the body in many ways. The most prominent theories and reasons are as follows: 1. Energy conservation According to the theory of energy conservation, we need sleep to conserve energy. Sleep allows us to reduce our caloric needs by spending part of our time working at a lower metabolism. This concept is supported by the way our metabolic rate decreases during sleep. Research suggests that 8 hours of sleep can result in a 35% daily energy saving from full wakefulness. There is also a theory of energy conservation during sleep. This suggests that the main purpose of sleep is to reduce a person’s energy intake during the day and night, when it is inconvenient and less effective to hunt for food.

2. Cell Restoration Another theory, called the recovery theory, says that the body needs sleep to recover. The idea is that sleep allows cells to repair and grow again. This is supported by many important processes that take place during sleep, including:

  • muscle repair
  • protein synthesis
  • tissue growth
  • hormone release
  • brain function

The theory of brain plasticity says that sleep is necessary for brain function. Specifically, it allows neurons, or nerve cells, to reorganize. When you sleep, the lymphatic system that removes waste from the brain removes waste from the central nervous system. It removes toxic by-products from the brain, which accumulate during the day. This allows the brain to function properly when we wake up. Research suggests that sleep contributes to memory by transforming short-term memories into long-term memories. At the same time, it is manifested by deleting or forgetting unnecessary information that might otherwise clutter the nervous system. Sleep affects many aspects of brain function, including:

  • learning
  • memory
  • skills problem solving
  • creativity
  • decision making
  • concentration
  • concentrate

Our brains are alert to danger

Unknown voices should not speak to you at night – set off an alarm. “, Manuel Schabus, a researcher in cognitive neuroscience at the University of Salzburg, told New Scientist. Manuel Schabus and his colleagues noticed this brain alarm in 17 volunteers. After one night to adapt to the new environment of sleep laboratory , the volunteers underwent a polysomnography to record their brain waves, oxygen levels, heart and respiratory rate and movements.

“We presented the participants with audio recordings with their own names and two unknown names. These names were uttered either by a familiar voice or by an unknown voice, ”explained Mohamed Ameen, the study’s first author and specialist in cognitive neuroscience, according to the publication Science Alert .

Participants exposed to unfamiliar voices, played slowly, showed a higher response than those who were not exposed. These responses included micro-articles. Specifically, short bouts of brain-like activity that last only a few seconds. The function of microarousals is not yet fully understood. “K-complexes can be the key mechanism”

While both familiar and unknown voices have triggered patterns of brain waves called K complexes, only those who have heard unknown voices have experienced greater changes in brain activity related to sensory processing. “K-complexes can be the key mechanism that shapes the way we sleep, helping the brain decide whether to stay asleep or wake up. It’s a pretty clever mechanism that lets you filter out what’s relevant or not. And when it’s relevant, it will trigger a chain of processes that make it easier to process that information without having to wake up and stop sleeping, “Schabus told Inside Science. Together, these findings suggest that during sleep, the brain extracts relevant sensory information for further processing. This is in addition to previous research that suggests that the sensory processing of our environments continues even when we are unconscious, with the brain entering a “sentinel mode” to perform this processing. “Our results make unfamiliar voices more relevant – or, in evolutionary terms, potentially more threatening – and therefore more exciting for the sleeper than familiar voices,” the team wrote in their paper. ) While we sleep, the brain processes! However, researchers have not ruled out the possibility that this more aroused response is not only due to the fact that new voices are attracting more attention in general, rather than being specifically perceived as a potential threat. While the response to familiar voices did not change after repeated exposure later in sleep, the brain’s response to unfamiliar voices changed. This suggests that during sleep, the brain not only processed , but he also learned from the new information, probably deciding that the unknown but repeated noise was not a threat, thus mitigating future responses to it. These findings may help to explain why we can be difficult to sleep in new environments at first. The bottom line is that during sleep, our brain needs time to sort out all the unknown sounds and to determine that we are really safe to stay relaxed and unconscious.

Sleep is for learning and memory

One of the most active parts of the body during sleep is the brain. There are pronounced changes in the electrical activity of the brain during sleep. According to the evidence, this is the result of trillions of nerve cells in the brain literally rewiring. This rewinding, which takes place during deep, slow-wave sleep, is how we process and are able to retain the new information we have learned over the course of the day. This means that skipping sleep to get busy at an exam or an important presentation does you no favors, the researchers say. Evidence suggests that if you spend all night trying to learn something new and lose a few hours of sleep to do so, your brain will not retain that information in the same way it would if you had a full night’s sleep. . The brain really needs to process that information, which you really only do when you sleep.

Conclusion

Sleep helps us stay focused and focused. We all know the “unclear” feeling that results from a sleepless night, especially if we try to pay attention to a lecture on a complicated subject or focus on a complex task. But it is also important to note that chronic sleep debt is accumulating, and research shows that attention and concentration deficits caused by sleep loss actually accumulate over time, according to a study published by the publication Science Alert . Note: This article have been indexed to our site. We do not claim legitimacy, ownership or copyright of any of the content above. To see the article at original source Click Here

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