Like a dream learns about the disease and gets rid of them

At the time, American scientists from Boston University was expressed for the theory that during sleep the cerebrospinal fluid bathes the brain, cleansing it from the toxic protein. The slag is removed from the body. However how to work this washing machine? What is the principle? There was no answer, so many scientists are met, the hypothesis is rather pessimistic.

Photo: Sergey Mikheev/ RG Named ten rules of healthy sleep

But the authors did not despair. Their mice are very thin, subtle experiments that allowed us to understand how the wash. To this end, they taught the animals to sleep in the MRI that followed, as the brain moves blood. And while sleeping they also constantly measured in the EEG, indicating the activity of neurons.

as a result of a massive research attack on mice managed to unravel the mechanism of action of cleansing. It turned out that the activity of neurons during deep sleep, synchronized with the pulsation of the cerebrospinal fluid that bathes the brain waves and can carry toxins. Moreover, it is the nerve impulse as if each triggers the next wave of liquid.

And recently, a similar experiment, scientists at Boston University conducted in humans, discussed in the journal Science. And here the picture was the same as in animals. During deep sleep the neurons working synchronously with the pulsation of the cerebrospinal fluid.

the Value of this work to medicine is obvious. Knowing the mechanism of formation of slag, which leads to Alzheimer’s disease, and the principle of cleansing with deep sleep, it is possible to develop effective treatments.

for example, with the help of cutting-edge lasers with a wavelength of 1100 nanometers. Their beam has a high penetrating power, can work on the surface of the brain cortex and the shell. This opens the door for printsipialno new therapies for the management of cleaning the brain from toxic products during sleep.

sleep is a time of sending the images for long-term storage. The brain is busy analyzing and sorting the impressions accumulated during the day.

However, the study’s authors are careful. They said that while they saw only that between the electric and the rhythms of the cerebrospinal fluid is a clear link. Where is cause and effect, and whether or not is effective treatment of the brain? To answer that need new experiments. So it is too early to say that the science of sleep finally understood. Although the big step is done.

Today there are at least eight hypotheses that explains why nature has given us such a long sleep. Today, the most popular claims: sleep helps the brain rid itself of excess received during the information day, – told “RG” the candidate of medical Sciences, associate Professor, First MSMU n. a. I. M. Sechenov Michael Poluektov. – The bottom line. Per day brain cells, neurons, continuously “being bombarded” with information from neighboring cells. Between them there are connections, called synapses. By evening, the cage, figuratively speaking, it is literally crammed with a variety of information. Many of them are clearly excessive and even just “garbage”. So in sleep, when the brain receives information from the outside, it rebuilds its work: unnecessary synapses are eliminated, we need “upsize”, and the next day, the brain is again ready to accept fresh information. There are shows that dreams can be a consequence of “systematic data” or “prepare for danger”, which holds the brain in order to “rehearse” a collision with the threat in a dream.

Another theory considers the dream the ancient evolutionary protective mechanism, because during sleep the brain stores all kinds of activity, except for the motor, that is, a person becomes “very similar to a corpse.” Thus, the dream protects our human ancestors, disguising them as dead.

Photo: Olesya Kuchaeva/WG “RG”-tips: How much and how to sleep what helps insomnia

Professor of psychology at Harvard and sleep researcher Deirdre Barrett’s dream refers to the mobilization of resources to solve problems. She argues that during sleep the human brain is much more active and inventive.

“the Theory of dreams” by Ernest Hartmann’s dreams represents a therapeutic mechanism for getting rid of negative emotions. And the psychiatrist Zhang Jie believes that the brain during dreaming is busy processing memories. That is, sleep is the time of sending the images for long-term storage. Unconscious brain is busy analyzing and sorting the impressions accumulated during the day. In other words – during sleep is memory consolidation, the consolidation of memories and skills in long-term memory. In the course of this process is the establishment of new contacts between neurons.

– the Russian scientist from the Institute of information transmission problems of RAS Ivan N. Pigarev proposed a very interesting hypothesis of sleep, says Poluektov. – Here we say why the sleep your brain needs. And why is it the heart, liver, kidneys. They work and awake, and during sleep. Pigarev believes that during sleep the brain leads to a peculiar configuration of internal organs. The day he had no time to deal with them, if only to have time to get to shovel and assimilate external information. And in the dream, finally able to disconnect from external stimuli, incentives and “look at yourself”. It is as if the patrol bypasses the liver, heart, kidneys and other organs, and, finding the problem, reports it to the brain.

what comes in this SOS, how the brain responds to it, should be studied. May help dreams. For example, a number of scholars argue that when the disease of the digestive tract in dreams there are unpleasant scenes associated with food, for ailments of the respiratory system insenecaut scenes of strangulation. When suffering musculoskeletal, appear paintings associated with the movement disorder. That we have a “buggy”, it may, in the distinctive form to manifest in dream content. While all of this is just different versions of such mysterious phenomena as a dream.


Why we often Wake up before your alarm? The answer is found neuroscientist Jan born of the University hospital tübingen. The reason the private hours of our body. Moreover, a special role in soprovozhdenii plays a cortisol. In experiments it was shown that, having to Wake up, for example, at six in the morning, the body slows down the production of the sleep hormone melatonin, but starts to produce cortisol – the stress hormone and waking.

the Activity of neurons in the brain folds into an electric wave, which can be seen using electroencephalography (EEG). Among these waves are alpha rhythms, beta rhythms, theta, Sigma and several others. They differ from each other by different parameters and appear in different States: during mental stress, during quiet wakefulness, during sleep etc. Sleep, as we know, consists of the fast phase and slow, and slow is divided into several stages. Easy to guess that the name of the phase of sleep received by fast and slow electrical rhythms.