What is white sound. White noise for newborns: what is it? Natural white noise
Unfortunately, for more than two millennia of its existence, humanity has not been able to discover a universal way to lull children to sleep. The article provides answers to frequently asked questions regarding the technique of fast falling asleep using " white noise».
The method of "white" noise is based on the laws of physics, observations of somnologists and pediatricians.
By analogy with the color spectrum, colors were assigned to some noises (see photo).
How to explain the concept of "white noise" in human language? Imagine a huge orchestra. With a wave of the conductor's baton, the musicians begin to play. However, each of them plays only one, his own, note. As a result, the listener simultaneously hears all the sounds that his ear can distinguish. This sound vinaigrette is "white" noise (WN).
Do we hear "white" noise in everyday life? Yes, constantly.
So, natural "white" noise includes
- the sounds we hear when it rains,
- the rustle of leaves in the wind,
- the sound of the sea
- noise of blood in the veins, etc.
In everyday life, we also often encounter “white” noise when we hear:
- the sound of a working vacuum cleaner, fan or hair dryer,
- the sound of a television or radio receiver that is not tuned to a wave,
- the sound of water pouring from the shower head, etc.
How does white noise work? The fact is that most of our bodies, incl. hearing are active during our sleep. Accordingly, as soon as our hearing aid detects a change in the sound background, and the brain converts these changes into sound, consciousness switches to the "wakefulness" mode.
In this case, BS smooths out the arising sound changes absorbing any vibrational motion. Accordingly, due to this, the quality of sleep improves. In fact, the BS is the perfect camouflage. Other effects of BS on the human psyche are discussed in the next part of the review.
"Pink" noise (PM) sounds softer than BS. Consists of a mix of high and low frequency sounds. In addition, RSH is distinguished by a certain periodicity - every octave, the sound seems to fade.
- The natural "pink" noise can be attributed to the sound of a heartbeat - one of the first basic sounds that a child hears in the womb.
- To an artificially created RS - the sound of a flying helicopter, etc.
If you or your baby has a persistent feeling of rejection with SH, try using SH.
- the baby will fall asleep in a new place;
- the baby is overexcited and cannot cope with his own emotions (you must agree that it is simply stupid to demand control over emotions from a newborn baby);
- if new sounds have appeared in the environment surrounding the baby (for example, the sounds of a puncher or a drill behind a wall);
- if the baby has a slight physical ailment;
- if the baby has problems with sleep cycles and wakes up every 20-40 minutes, etc.
How does white, pink noise affect the child's psyche: benefits and harms
Important: the reaction to the noise of each individual is unpredictable! Continuous long-term exposure to BS can provoke an increase in blood pressure and cause headaches. In addition, constant exposure to noise above 50 dB can significantly impair hearing.
So, BS, however, like any other noise, causes stress.
To cope with stressful situation and restore homeostasis, the body begins to actively produce the hormone cortisol.
The release of cortisol into the blood affects the prefrontal cortex of the brain, which is responsible, among other things, for sleep in the deep phase.
In addition, the monotonous BS is familiar to the baby by the sound of the movement of blood, which the baby heard while in his cozy "house".
Pink noise is also as close as possible to the sounds that the baby hears in the womb:
- heart beat,
- sounds accompanying the work of the intestines, etc.
Accordingly, comfort for the baby is by no means deaf silence, but an environment filled with sounds. But the sounds should be extremely familiar, "native". And then they will be a powerful tool that triggers the "complacency" mode.
White noise for baby sleep - the sound of the womb for newborns, the sound of rain, water, sea, trains: pros and cons
An absolute plus of using white / pink noise is the quick start of the baby's self-soothing mode.
Minus: addictive effect. As a result, it can be quite difficult for an older baby to give up the habit of falling asleep / sleeping with white / pink noise.
How to use white, pink noise for newborns, babies, babies?
- The source of noise should be at least 1 m away from the baby's sleeping place.
- The noise level should be no more than 50 dB. If the baby has a tantrum, which is accompanied by loud screams, the sound level of the BS can be higher than 50 dB. However, as the baby calms down, the sound should be reduced.
- If the baby has problems with sleep cycles, the noise should be turned on 10-20 minutes after falling asleep crumbs.
Is hair dryer noise harmful to newborns?
For the baby, it is not the noise of the hair dryer as such that is harmful, but level hair dryer noise, which is 80 dB. If you are going to use a hair dryer as a source of "white" noise, you will have to turn it on in the next room, since the safe noise level is 75 dB, and the comfortable one is only 50 dB.
How to buy a white noise generator on Aliexpress?
To find the BS generator directly, go to the Aliexpress website and enter a query in the search box sleep sound machine or sleep helper.
In the first case, in addition to the BS generators, the system will automatically select and offer you devices for measuring the noise level (sound level meters). And in the second - ear plugs and devices to combat snoring.
Standard household devices to improve sleep, which are offered by Aliexpress sellers
A standard home sleep aid has:
- mechanical volume control;
- timer for automatic shutdown of the device;
- recording various sounds of natural "white" noise.
Such devices are quite light and convenient to take on the road, since the power source can be either a standard power supply or batteries.
The cost of the device varies within 20 USD.
White, pink noise - the perfect sound for children, for sleep: reviews, Komarovsky
The effectiveness of white/pink noise, like any other sedative, is highly individual.
For some, "white" noise becomes a panacea for sleepless nights or restless daytime sleep of the baby. Others remain dissatisfied with the result.
Below is a discussion of the white noise method on one of the thematic forums.
Hello Lyudmila! I really hope for your help, because I am on the verge of a nervous breakdown. My daughter is only three weeks old, but I just can't get a normal daily routine in order to cope with all my duties as a mother and wife. I can't do almost anything! The biggest problem is that the baby falls asleep for a long time and she has a very light sleep (even a soft sound can wake her up).
From one of my friends, I heard that there is a kind of white noise for a newborn, which helps to calm and lull the child, protects his sleep. But she could not explain in detail what it is, where to get it and how to use it correctly. I address these questions to you and ask you to tell about this method.
What is white noise
The method of turning on white noise for a newborn has become known recently, although certain methods of this method of calming an infant have been used long before that.
Know! White noise is a kind of "vinaigrette" of sounds of different volume, intensity and frequency, which evenly fill the entire auditory range. The result is a monotonous sound without sharp drops.
Natural objects can be sources of white noise. These include:
- The murmur of a stream;
- The noise of the waterfall;
- Tidal bore;
- Rain;
- The rustle of leaves;
- The roar of the wind.
It is also published by some devices:
- fan;
- air conditioner;
- a vacuum cleaner;
- washing machine.
You can imitate such sounds:
- Turning on the water in the tap (shower);
- By tuning the radio to an unoccupied radio wave (at the same time, a characteristic hiss will sound);
- Using a special machine that generates similar sounds;
- By including the appropriate audio recording.
Where did this theory come from that a monotonous rumble will not wake up a newborn, but, on the contrary, will calm him down, make his sleep sound? This conclusion was reached after studying the conditions of intrauterine development of the child (you can read about how the baby develops in your tummy in the article Development of the child in the womb >>>).
The fact is that in the mother’s stomach, the baby is not in absolute silence. It is surrounded by many sounds. The baby hears the beat of his mother's heart, the rumble of blood moving through the vessels, the noise of the lungs when inhaling and exhaling. Moreover, all this is background noise, which sounds measured and constant. The sound level of such a "concert" reaches 90 - 100 dB.
The child gets used to this background. He has a stable association that connects such a sound with a comfortable situation in which nothing threatens him.
But many parents do not know about this feature and make a serious mistake - during sleep they artificially protect the newborn from any sounds. Such silence does not calm the baby, but increases his anxiety and sensitivity in sleep. Read about what to do if the baby is restless in a dream in the article Why does a newborn sleep poorly?>>>.
Interesting! If you have doubts about the effectiveness of the white noise method for lulling a newborn, I want to draw your attention to the fact that you yourself have probably already had the opportunity to experience its effect. Remember what most moms do when trying to soothe their newborn? They begin to whisper "sh - sh - sh - sh" or "h - h - h" in a measured manner. But this is an imitation of white noise. And she works!
Many mothers share their experience, talking about the fact that their child quickly falls asleep under the hum of a hair dryer or vacuum cleaner. Some specifically purchase an indoor fountain for this or turn on a compressor for water in an aquarium. It is also common to notice that a newborn sleeps well while walking down a busy street. All of these situations serve as examples of the use of white noise.
Why is it needed
White noise helps to activate the self-soothing mechanism that is formed in the baby even before birth. The scope of such a sound background is quite large:
- Rapid sleep. To the sounds of white noise, the newborn relaxes. In such an environment, he feels safe and falls asleep peacefully. By the link you can find an actual article on this topic: The child falls asleep for a long time, what to do ?>>>;
- Deep sleep. It is known that human sleep consists of deep and superficial phases, which alternate with each other several times. At the moment of a change in the phase of sleep, a short-term awakening occurs. The slightest rustle, sharp sound or any other uncomfortable situation can cause the child to wake up completely and it will be quite problematic to lull him again;
White noise, which sounds while the newborn sleeps, allows you to make the transition between sleep phases smoother, and the sleep itself is more calm and even.
- Elimination of extraneous sounds. White noise is very effective if there is a possibility of sudden loud noises near the room where the newborn sleeps (there is a repair nearby, children are playing in the next room, etc.). Against the background of a monotonous hum, such sounds will go unnoticed;
- Calm. The monotonous hum has a very beneficial effect on the nervous system of the newborn. His brain identifies this noise as the sounds of the mother's womb. Therefore, against such a background, the child subconsciously has feelings of comfort, security, and he quickly calms down. This method will help to cope with the crying and hysteria of the baby;
- Relaxation. It should also be said that white noise can also be useful for adults. Try to turn it on and take a comfortable position. In such an environment, it will be easy for you to relax and fully relax.
In everyday life human brain constantly analyzes the surrounding acoustic background in search of sounds that signal danger. The monotonous hum requires the least effort to scan it, so this listening allows you to "disconnect" from the outside world and relax.
Benefit and harm
- The method of using white noise is most effective in the first four months of a newborn's life. During this period, his memory still stores the sensations from being in his mother's stomach, and the baby correlates the sounds he hears with them ( interesting article: What should a child be able to do at 4 months?>>>);
- The benefits of including white noise are obvious. Since this method is aimed at strengthening sleep, the newborn sleeps well. Thanks to this, he will feel good during the waking period, and his nervous system strengthened. Read about how much a baby should sleep at 1 month?>>>;
- For moms, white noise becomes a real lifesaver, which allows you to get more free time. After all, it takes less time to lull a newborn, and his sleep lasts longer. And you don’t need to constantly monitor the baby while he sleeps, hoping to notice the awakening period in time and try to rock the baby again.
- Since white noise consists of sounds within the human auditory range, there is no harm to newborns from using this method. It does not in any way affect the subconscious, hearing and mental development baby
- You should also not be afraid that the constant inclusion of white noise while the child falls asleep will cause him addiction. Research does not support this. Over time, the baby will learn to independently control his sleep and will no longer need additional sound.
How to use white noise
White noise is generally only recommended for use when a newborn is sleeping. Depending on the situation, it can be turned on only when the baby falls asleep or left on all the time while the baby is sleeping. In this case, the following rules must be observed:
- To calm a newborn when he cries or is naughty, the volume of white noise should be higher than the cry of the baby. This is necessary so that he notices a new sound and begins to listen;
- As soon as the child calms down, the volume of white noise should be reduced;
- If white noise sounds during the sleep of a newborn, then its volume should not exceed 50 dB;
- The source of white noise should not be placed near the baby. The distance between them should be more than 1 meter.
It is important to remember that white noise helps to calm the newborn only when his anxiety is caused by fatigue or mental stress. If the whims of the baby occur for another reason (hunger, colic, illness, etc.), then this method will be ineffective. In such situations, you must first eliminate the source of discomfort.
If your baby is suffering from tummy problems, colic, pay attention to the Soft Tummy seminar >>>
What is the difference between white and pink noise?
In addition to white noise, you can use its variety - pink noise. The differences between them are minor.
- If the sounds of white noise seem harsh, then you can try to muffle it, filter it out (weed out the most piercing ones). The resulting product is pink noise;
- Pink noise is not so diverse, poorer in its sound. It is more monotonous, but at the same time it is considered to be gentler and better suited for newborns.
At the moment, there is no exact data or research results that would indicate which sounds are more effective for newborns: white or pink noise.
In this matter, you need to focus on the preferences of your baby. Experiment, try turning on different background sounds and observe your child's behavior at the same time. Soon you will understand what kind of noise he likes the most.
I hope that after that you will no longer have problems with lulling your daughter and there will be free time during which you will not only have time to cope with all your affairs, but also be able to pay a little attention to yourself.
The nervous system of a child in the first months of life is unstable, which is why he can often cry for no reason, get irritated, or cannot fall asleep quickly. Each baby is an organically developing personality with a certain type of character, genetically incorporated. It is at the subconscious level that the reaction of the child's nervous system is absolutely unpredictable, so every mother can expect causeless crying or insomnia. How quickly and without harm to health to establish the activity of the child's brain in order to cause the baby to feel relaxed and satisfied? In some cases, white noise will help.
Sources of white noise and the mechanism of action on the nervous system
Photo from www.pixabay.com
The term "white noise" should be understood as a constant frequency monotonous sound, the level of which does not exceed 50 decibels. The source can be a variety of natural phenomena and technical devices:
The sound of flowing water;
. the babbling of a stream;
. working Appliances- hair dryer, fan, refrigerator;
. the sound of a moving train;
. special programs for computer equipment and devices that simulate low-frequency monotone signals.
Under natural conditions, the baby has adapted to white noise in the womb. The movement of blood through the vessels, the friction of the placenta against the walls of the uterus, the rumbling in the mother's intestines - these processes occur precisely with the very sound that creates a semblance of white noise.
Being in the uterine cavity, the baby also experienced various emotions, including negative ones. To help the nervous system to cope with irritation helped the same low-frequency constant noise. It is equally natural that, having been born, with the appearance of any external stimuli, even imperceptible to adults, the child is able to calm down only after hearing the usual melody.
Photo from www.maikomila.bg
What does white noise do to a child's body? It is able to stimulate the following processes:
Relieve insomnia and speed up falling asleep;
. improve brain function;
. reduce the perception of stress;
. stop unreasonable crying;
. normalize the work of the gastrointestinal tract and slow down the heart rate.
The main purpose of white noise for practical use is to help parents with insomnia and irritability in a baby.
How to use white noise?
Photo from www.babyzzz.ru
Of course, it is very difficult to create the effect of a moving train or a running car in a room. But almost any woman is able to turn on a hair dryer or set up a special program on a smartphone. However, there are some rules for using monotone sound:
To remove the cry of a child or causeless crying, the noise must be heard by the baby - that is, for a short period of time, its level must exceed 50 decibels;
. you need to turn on the source of white noise to fall asleep for 20-30 minutes before reaching the deep sleep phase;
. if the baby is restless and often wakes up, then it is possible to use low-frequency sound vibrations even throughout the night;
. there should be no pets in the room, as the reaction of animals to the melody is unpredictable;
. the rhythm must be necessarily smooth so that it does not interfere with either the baby or all other people in the room;
. you can not use the method if the child is hungry - there will be no effect.
To create a pleasant background, even a simple hair dryer will do, but you should remember that in the process of its work the amount of oxygen in the room decreases and the ambient temperature increases. Therefore, if it is necessary to use such a method for a long time to eliminate sleepless nights, it is better to use special computer programs or smartphone applications that imitate the sounds of nature, for example, as white noise. Recently, gadgets designed to create a pleasant sound atmosphere in the room have also appeared on sale.
Is white noise harmful?
Photo from www.allmyworld.ru
With the constant operation of electrical household appliances, there is a risk short circuit and creating a force majeure situation in the room. Given the fact that this often happens at night, you may not have time to react to such circumstances in time. However, for the health of the baby, the risk negative impact white noise has not been proven. Moreover, in official pediatric practice all over the world, it is generally accepted that a monotonous sound helps to adapt the nervous system to the new conditions of a child's existence. It activates the protective reflexes of the body, increases immune system and improves blood flow in the brain.
Full-fledged studies have been carried out only in relation to the sound emitted by a running fan throughout the night in children of the first year of life. It turned out that this practice reduces the risk of stopping breathing in a child’s sleep by more than 70%. There were no negative effects on the baby's body.
For parents, an important dilemma is whether the baby can get used to the noise and stop falling asleep without it. However, there are no reasons to assert this, both from practical and from scientific point vision. Over time, by the age of 2, the nervous system is well developed. This allows children to independently regulate the duration of wakefulness and fall asleep on time. Moreover, the possibilities of productive contact with the baby increase, as he begins to understand human speech well. Ordinary commands or bedtime stories are often enough for a child to fall asleep well. There is also no need for night feeding, which allows parents and the baby to sleep soundly. All these factors lead to an unequivocal answer - getting used to white noise will not occur, so you can use it without fear. If you have questions or disputes, you should immediately consult with your pediatrician.
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Many mothers use music and lullabies to put the baby to sleep, but what if the child is very active, excited and does not intend to go to bed despite the late hour? Sleep experts recommend using white noise. It can be the sounds of nature, the buzzing of a vacuum cleaner and others. They are no less effective than mother's lullaby. Thanks to white noise, the child calms down, stops crying. It can become your magical lifesaver.
What it is?
White noise is a uniform background sound. It does not carry any information, which is why over time a person simply stops noticing it. White noise - rustling leaves, drops, road noise, the hiss of a radio or TV, the quiet buzz of a vacuum cleaner, the sound of the sea, rain, hair dryer or washing machine.
As paradoxical as it may sound, noise can help your little one fall asleep soundly.
How does it work
Many people ask: why is white noise more effective for a baby than a lullaby? Everything is very simple: as mentioned earlier, it does not carry any information, it's just a monotonous hum. It is these sounds that resemble those that the baby heard while in the womb. This has a simple effect on the child: he remembers that serene state, soft swaying, muffled light, monotonous hum. White noise is a memory of the calmest and safest place. It effectively soothes babies in the first months of life. Special observations were carried out, during which it was proved that the process of falling asleep occurs three times faster, not in complete silence.
Why does this only work in the first months of life?
White boiling around life is very useful at any age during daytime sleep. The baby eventually forgets about the sensations in the mother's stomach. But white noise still has a positive effect on the child.
You should not specifically include music with recordings of such sounds, just go about your business while the baby is resting. It is very good if there are still children or animals at home.
How to apply white noise?
The sound, especially loud, prevents children from sleeping at the age of three or four months, in principle, like adults. What is it about in this case? Conversations in the next room, passing cars, repair work of neighbors. White noise is essential to help your baby fall asleep and enter deep slow sleep. In this case, quiet sounds are not heard, and loud sounds are not perceived so violently.
This is especially necessary for very active children who react to any rustle. They are so interested in being awake that there is no time left for sleep. During deep sleep, the threshold for perceiving sounds is lowered, but still some children can hear them, then sleep will become superficial or even interfere. It can be a slamming door, a barking dog, a car alarm, conversations, a working TV, a familiar tune, and so on. However, white noise is very beneficial for babies.
Healthy sleep
As you know, babies can wake up due to extraneous noise if they want to roll over to the other side and for other reasons. Interruption of sleep (short sleep) is very harmful to the body of the crumbs. White noise for newborns is necessary to prolong sleep, so your child will be much more fun, active, and inquisitive during wakefulness.
Rules and selection of suitable sounds
As you know from the course of physics, white noise is a random process. There are a lot of such sounds, which one your baby will like - it's hard to say. You need to act. In addition, you need to know some rules:
- Do not allow sounds for more than twenty-five minutes.
- Place the source at a distance of at least a meter from the crib.
- Do not exceed the volume limit (50 decibels).
As for the first point. If the baby constantly sleeps to these sounds, then in the future it will be difficult to wean him from this. If you bought a special white noise generator, it will automatically turn off after twenty to twenty-five minutes. The third point must be observed, otherwise it will lead to a disorder of the hearing aid and the mental health of your child.
White noise and breastfeeding
Strange as it may sound, but special sounds will help you and your child with breastfeeding if the baby refuses to breastfeed. It often happens that the child arches, cries, refusing to take the breast, but when he hears the noise of a hair dryer, vacuum cleaner or water, he instantly calms down and begins to actively suck. If you have problems with feeding, this option may help you.
Moreover, now everyone has smartphones, you rarely see a black and white push-button telephone. You can download a lot of free applications with these. Someone does not like this option? There are many toys that generate white noise. Also, kids like to listen to the radio on an empty frequency, that is, hiss.
Natural white noise
Try to buy a small home waterfall, a fountain, this sound will be more natural, maybe your baby will like it. Only in this case it is necessary to observe the rules mentioned above. It's just that some kids are so cunning that the sound of a real river can easily be distinguished from an artificial recording, then your salvation is a store where you can buy a homemade waterfall.
Benefit and harm
Among useful properties scientists found the following phenomenon:
- normalization of sleep;
- stress reduction;
- good imprint on the nervous system;
- reducing the likelihood of sudden infant death syndrome.
If we talk about harm, then white noise for newborns is absolutely safe, subject to safety rules.
Classification
White noise can be divided into the following groups:
- natural;
- technogenic;
- artificial.
The first group includes the sound of rain, leaves, the murmur of a stream, the sound of a nearby waterfall (the distant one already refers to pink noise), surf, and so on.
The second group is a little easier: it includes a vacuum cleaner, a hairdryer, washing machine, hissing TV or radio ...
Artificial - these are recordings of any kind of white noise, less effective for the child. There is an opinion that it is even harmful to the child.
Hysterics
White noise helps many parents overcome a child's tantrum. If the baby does not like something, worries, use this method. A large number of mothers cope with the endless crying of the child only in this miraculous way.
The use of white noise during intestinal colic will also help to cope with the problem, alleviate the suffering of the child, set him in a positive mood.
Be sure to remember the rules of use. Long listening, although it will calm your baby, can be addictive, which is very harmful. If you turn it on loudly, it will badly affect the mental health of the baby, problems with the hearing aid may appear.
When can you turn it off? After twenty-five minutes, or maybe earlier, when the baby falls asleep well and soundly. At this time, the acuity of perception of sounds drops sharply. Then you can just go about your business. It is better if the child sleeps under household noise. Children and animals will be good helpers here. TV, radio and similar receivers only harm healthy sleep, as this noise carries information, the child hears familiar melodies, the conversation of strangers.
When used correctly, it is impossible to harm the child, use these tips, they will make your life much easier.
It all started when my son was 5 months old. Putting him to bed was a challenge for me. The kid heard the slightest rustle and woke up, and to the noise of a drill or the clatter of neighbors from above he refused to sleep at all. Due to lack of sleep, the son became capricious, crying at every hint of sleep. The dreams became shorter and less frequent.
Is it dangerous to use white noise?
It turns out that the loudness of white noise affects its usefulness. The volume of more than 85 decibels - the noise of the highway during rush hour - causes stress and tension in a person, it is impossible to fall asleep with such noise. Noise less than 50 decibels will not affect sleep in any way, hearing will not perceive it.
An average volume level of 50-70 decibels is beneficial for sleep - similar to the sound of water in the shower. Therefore, when choosing a source, be sure to specify what volume the device is declared by the manufacturer.
What devices - sources of white noise to use?
I know that parents include recording white noise on a tablet or phone, a fan, tap water, a hair dryer, a vacuum cleaner to soothe a child. These funds are acceptable as a measure for urgent reassurance of the baby. The sources listed are difficult to use all night. In the recorded white noise, with repeated listening, you can clearly hear the place of the soldering of the fragment, which is annoying. Do not turn on the hair dryer and vacuum cleaner all night - the threat of overheating of the device. Pouring water is costly. The fan is safe, but it creates strong air currents, and its noise is not enough. Therefore, the choice is for a specialized device - a safe and clean source of white noise.
Why do children sleep well with white noise?
The baby in the mother's tummy is surrounded by a constant noise of blood flow, amniotic fluid, mother's heartbeat, external noises. The volume of the sound background reaches 85 decibels. Therefore, when white noise is turned on, the baby feels a familiar environment, calms down and falls asleep. Grown up children, thanks to white noise, do not hear extraneous sounds during sleep - the imagination does not draw monsters under the beds. And the inclusion of white noise is a ritual that helps the child tune in to sleep.
Can a child get used to white noise?
Rituals are actions repeated every day before going to bed. The effect of the ritual is that the child gets used to these actions and understands that it is time to sleep. White noise as part of the ritual also develops a habit. However, the habit of sleeping with white noise is just as easy to break as listening to a bedtime story or a song.
Should I always turn on white noise to sleep?
You will notice the benefits of white noise only with constant use of it. This is especially important for babies who wake up during the transition from one phase of sleep to another. White noise has a calming effect, and the child feels familiar when waking up. Therefore, the baby will fall asleep again without tears, and the parents will not notice that the child woke up. Sleep becomes deep and healing.
Can American research be trusted?
The first mass-produced white noise source was invented in the United States in the 1960s. Doctors used the device for patients with sleep disorders. However, Russian scientists studied the properties of white noise at the beginning of the last century. They found that the brain relaxes with such a sound background, a person moves away from experiences and falls into sleep (source - L.I. Kupriyanovich "Biological rhythms and sleep"). Although what to hide, Western scientists have advanced much further in the study of the science of sleep.