为什么听流水声会催眠？英文双语对照

流水声是属于白噪音当中的一类。

为什么白噪音有催眠效果，主要是因为音由人耳可以感知的20～2000赫兹的声音构成，是一种单调的、有规律性的声音。科学家通过脑电图和脑磁图发现，大脑对外界单调的、有规律的声音会产生谐振，而这种谐振会使大脑处于一种安静的、相对不活跃的状态，同时产生疲劳感和困倦感。

不只是声音，所有单调的、刻板的活动都容易引起大脑产生疲劳性反应——很多人睡不着的时候数羊，数着数着就睡着了，也是一样的原理。此外，单调和刻板的视觉也会刺激大脑产生疲劳感，这就是为什么人们在一马平川的公路上开车久了容易感到疲劳和困倦的原因。

除了引起大脑谐振之外，雨声带来的嗜睡感还可能与人类进化过程中留在基因里的记忆有关。在原始社会，下雨的时候人类外出活动受限，通常只能待在栖身处休息、睡觉，因此人类基因里可能保留了听见雨声就想睡觉的条件反射。

从生物发展和生命活动的规律来讲，总会出现特殊个例，某个规律一般都存在着不同程度的个体差异。因此，对于大多数人来说，白噪音可以让人平静，产生困意，但对于少数人来说，可能就只是干扰入睡的噪音。如果觉得听白噪音对睡眠有帮助，就不妨继续使用。但如果刻意想要使用白噪音催眠，就很可能因为对睡眠这件事过分在意而对自己产生了心理暗示，存在引发睡眠焦虑的可能。

如今大多数人生活在城市中，听纯粹的大自然的声音逐渐成为一种奢求，好在除了大自然的白噪音外，我们还有很多途径可以获得与白噪音相近的声音，利用身边的小物件，如电风扇、空调、风铃等，同样能够舒缓。

白噪音是指一段声音中的波长分量的功率谱密度在整个可听范围（1.7cm~17m）内都是均匀的。

白噪声或白噪音，是一种功率波长谱密度为常数的随机信号或随机过程。换句话说，此信号在各个波段上的功率是一样的，由于白光是由各种频率（颜色）的单色光混合而成，因而此信号的这种具有平摊功率谱的性质被称作是“白色的”，此信号也因此被称作白噪声。

白噪声或白噪音，是一种功率波长谱密度为常数的随机信号或随机过程。换句话说，此信号在各个波段上的功率是一样的，由于白光是由各种频率（颜色）的单色光混合而成，因而此信号的这种具有平摊功率谱的性质被称作是“白色的”，此信号也因此被称作白噪声。

魔术的“白噪音”有令人惊叹的特性，它就像白色的光束，由所有的颜色组成，而我们看到的却是白色的光。它是一种有人也许会问，白噪音听上去像什么？能确切的让我们感受到吗？

在一些西方国家，很多接受过白噪音治疗的人形容它们听上去像下雨的声音，或者像海浪拍打岩石的声音，再或者像是风吹过树叶的沙沙声，亦或是高山流水瀑布小溪的声音。这种声音对各个年龄层的人来说，都可以起到一定声音治疗作用，是一种“和谐”的治疗声音。也有人感觉“白噪音”听上去有些许自然气息，而一定音量下的白噪音可以治愈一些多动患儿的精神集中能力障碍。

一些专家学者称“白噪音”实际上是大自然给予我们的一个声音暗示，科学家发现，大脑对白噪音会产生谐振，并令大脑平复至安静状态，从而召唤睡意，让人犯困想睡觉。

一项由伦敦皇家医学研究院主导的研究中，研究者选取了20名婴儿作为测试对象，在给婴儿播放了15分钟白噪音后，16名婴儿（80%）睡着了。而没有听白噪音的对照组婴儿，在同等时长内仅有5人（25%）入睡。研究者表示，白噪音也许能帮母亲解决“难搞”的婴儿。

另外，白噪音还能起到“屏蔽噪音”的作用，可削弱环境周围刺耳的声音，从而营造良好的睡眠环境。比如，若施工、婴儿啼哭等声音影响了你入眠，可利用白噪音“屏蔽”掉它们。

也就是说，如果在白噪音的环境里，你再听到比如汽车喇叭、别人说话的声音，这些噪音能有效地被屏蔽掉。所以，如果你的睡眠环境比较吵，经常被吵醒，你可以试一试“白噪音”。

2016年发表在《Journal of Caring Science(关怀科学杂志)》上的研究中，研究者发现白噪音对冠心病患者的睡眠能产生有利影响，并建议使用白噪音作为一种改善睡眠的方法，以掩蔽环境噪音、诱导入睡。

Running water sound is a kind in the center to belong to white noise.

Why white noise has hypnotic effect, because,basically be sound by the 20 ～ that person ear can feel the sound of 2000 hertz is formed, be a kind drab, the voice that has regularity. The scientist passes electroencephalogram and discovery of cerebral magnetism graph, cerebrum is drab to the outside, the voice that has the law can produce resonance, and this kind of syntonic meeting makes cerebrum is in a kind quiet, relative to not active position, produce fatigue feeling and Mondayish move at the same time.

It is sound not merely, all and drab, inflexible activity causes cerebrum easily to produce fatigue sex to react -- restless moment counts a lot of people sheep, several a move in chess or a movement in wushu are worn was asleep, also be same principle. In addition, sheet mediates inflexible vision also can stimulate cerebrum to produce fatigue move, this is why people drives on the highway of a wide expanse of flat land long feel exhaustion and Mondayish reason easily.

Besides cause cerebrum resonance besides, the be addicted to that pitter-patter brings sleeps move is possible still the memory that keeps in gene in as developmental as the mankind process is concerned. In primitive society, when raining, the mankind goes out the activity suffers be restricted, can wait for only normally rest in stay place, sleep, because the likelihood in this mankind gene was withheld,hear the conditional reflex that pitter-patter becomes aware sleepily.

From biology the rule of development and life activity is told, total conference appears special an exemple, a certain law is existing commonly the individual difference of different level. Accordingly, to most person, white noise can make a person quiet, generate tired idea, but to the small number of people, the likelihood just disturbs the noise that fall asleep. If feel to hear white noise helpful to Morpheus, might as well continue to use. But if want to use white noise painstakingly hypnotic, probable because be opposite,produced psychological suggestion to oneself, existence causes the likelihood of Morpheus angst.

Most nowadays life lives in the city, the voice that hears real nature becomes a kind of excessive to beg gradually, fortunately outside the white noise besides nature, we still have a lot of ways to be able to gain the voice with white noise close, use the little thing beside, wait like fanner, air conditioning, wind-bell, same can slow.

The power spectral density that white noise is the wavelengh heft in pointing to a paragraph of sound is in whole can listen to limits (1.7cm~17m) inside it is even.

White noise or white noise, it is the random signal that spectrum density of wavelengh of a kind of power is constant or random process. In other words, this signal is in the power on each wave band is same, because Bai Guang is by all sorts of frequency (color) monochromatic light mixes and become, consequently this kind of has music of smooth booth power quality of this signal is called to be " of white " , this signal also is called white noise accordingly.

White noise or white noise, it is the random signal that spectrum density of wavelengh of a kind of power is constant or random process. In other words, this signal is in the power on each wave band is same, because Bai Guang is by all sorts of frequency (color) monochromatic light mixes and become, consequently this kind of has music of smooth booth power quality of this signal is called to be " of white " , this signal also is called white noise accordingly.

Magic " white noise " have character of exclamatory making a person, it resembles white beam of light, by all color composition, and the light that what we see is white however. It is a kind of somebody perhaps can ask, does white noise listen go up like what? Can exact let us be experienced?

In country of a few wests, a lot of people that had accepted white noise treatment describe them to listen go up the sound that resembles raining, perhaps flap like ocean wave petrosal sound, perhaps resembling again is the froufrou that wind has blown a leaf, also or the sound that is brook of chute of high mountain running water. This kind of sound is right for the person of each age layers, can remove certain sound to treat action, be one kind " harmonious " remedial sound. Also somebody feels " white noise " listen go up some make natural breath, and the white noise below certain volume can cure a few mind that change a little patient more to center ability obstacle.

Scholar of a few experts says " white noise " it is the suggestion of a sound that nature offers us actually, scientist discovery, cerebrum dialogue noise can produce resonance, make cerebrum be pacified comes quiet condition, thereby call drowsiness, let a person make want tiredly to sleep.

One Xiang Youlun honest is royal in the research of medical academy dominant, investigator chose 20 babies to regard a test as the object, after broadcasting 15 minutes of white noise to the baby, 16 babies (80% ) was asleep. And contrast without what hear white noise group baby, in coequal when long inside only 5 people (25% ) fall asleep. Investigator expresses, white noise may help a mother solve " do hard " baby.

Additional, white noise still can rise " screen noise " action, can weaken an environment all round shrill voice, build favorable Morpheus environment thereby. For instance, if the sound such as cry of construction, baby affected you to enter Mian, can use white noise " screen " drop them.

That is to say, if be in the environment of white noise, you hear the voice that for instance Klaxon, people says again, these noise are dropped effectively by screen. So, if your Morpheus environment makes a noise quite, often be made a noise to wake, you can try " white noise " .

Published in 2016 " Journal Of Caring Science(shows loving care for scientific journal) " in the research that go up, investigator discovers white noise can produce beneficial effect to the Morpheus of patient of coronary heart disease, suggest to use white noise to improve the method of Morpheus as a kind, with cover environment noise, revulsive fall asleep.