Watch out for how your headphones are hurting your ears
Hearing is one of the five senses of human beings. It is the easiest to protect, but the easiest to ignore.
As early as in ancient times, our ancestors could judge the direction and position of natural enemies and prey in the jungle and wilderness through sound. Good hearing is one of the guarantees of survival.
The music at that time was gurgling water and early bird song, and the noise was nothing more than roaring lightning and falling waterfalls.
Nowadays, with the development of science and technology, many kinds of noises have numbed many people and forgot the nature of their ears.
Hearing loss, a feature of aging that should have appeared in old age, has now appeared in more and more young people.
One of the big reasons for this “old ears first” is excessive use of headphones.
Inadvertently, minor noise-induced hearing impairment (NIHL) gradually deforms our ears.
Start now, moderate music, healthy ears!
A random survey of Purdue University researchers conducted by our students shows that more and more people have a pair of old ears on their young heads-in academic terms, that happensThe number of minor noise-induced hearing impairments (NIHL: Noise-ductiveHearingLoss) is increasing year by year.
What is noise hearing impairment?
In short, it is a condition in which the ear has suffered from excessive sound for a long period of time, and the long hearing has decreased.
Hearing decline was originally a patent of the elderly. The reason why it is now commonplace among young people is that it is hard to escape the connection between walkmans and headphones.
The ears damaged by noise need to understand the relationship between the earphones and the ears, or NIHL, first of all, it is inevitable to talk about how the ears work: our ears are an extremely sophisticated sound capture system, which can be roughly divided intoThree major areas: outer ear, middle ear and inner ear.
The three parts that are most closely related to hearing are the tympanic membrane of the outer ear and the middle ear, the ossicles located in the middle ear, and the cochlea in the inner ear.
An acoustic signal is emitted from the sound source, and when it reaches the tympanic membrane through the external ear canal, the extremely thin and sensitive tympanic membrane changes the sound wave vibration into the ossicles.
The hearing bone is made up of the three smallest bones of the human body: the malleus, the anvil and the sacrum.
The three bones are coaxial with a lever system: the hammer bone is directly connected to the tympanic membrane, and the vibration of the tympanic membrane directly drives the movement of the entire auditory ossicle system, transforming the vibration into a cochlea filled with fluid through a small opening (oval window)Inside.
The cochlea is responsible for transmitting vibrations of hair cells at different frequencies into microvolt-level electrical signals, which are converted into electrical nerves in the brain through nerve fibers.
Although the whole process is very complicated, due to the high configuration of the ear processor, we can not feel any delay.
When in a high-decibel sound environment, the most direct damage is the inner ear. Treble or noise constantly impacts the fluid in the oscillating cochlea, causing hair cells to die due to excessive stimulation.
An image metaphor is that when we “enjoy” music over 100 decibels, hair cells are like small grasses that are constantly being crushed by rollers and slowly die.
In the long run, when the vertically aligned hair cells are severely degraded, the tandem hearing level drops sharply.
As a person living in a complex urban environment, there will be short-term high-level noise intrusion every day, such as electric drills on roadside construction or subway trains passing by.
The interference of shortening the time will not interfere with any damage to the ear, but if the body is not given time for rest and recovery for a long time, the injury cannot be avoided.
Therefore, people who work for a long time in a high-decibel noise environment will have different degrees of hearing damage.
The culprit of premature hearing loss: Most young people in headphones do not engage in “high-risk” industries that are intimately exposed to noise, but their hearing has replaced them significantly.
The most direct cause of hearing loss is excessive use of headphones, and this “excessive” standard is mainly reflected in two aspects: the sound is too loud and the time is too long.
According to the regulations of the Occupational Safety and Health Administration, sounds exceeding 85 decibels can be classified as noise.
In fact, many people can tolerate the music of more than 90 decibels without being aware of it.
Does everyone listen to songs in a masochistic state of mind?
Of course not. Many people like to listen to songs in subways, buses or other noisy environments. Naturally, the volume of the headphones is too high.
In one study, researchers found that when the ambient volume reached 65 decibels, participants would choose to increase the volume of the headset to 82 decibels for better results.
When the environmental level is higher, this number may also be higher.
In the long run, even in quiet rooms, headphone users still have to adjust the volume setting to a level far beyond what is actually needed.
Even more frightening is that playing too much volume for a long time does not cause immediate pain.
For the average person, if you have headaches, feet, feet, and ears, why not pay attention?
At the very least, noise-induced hearing loss is caused by long-term accumulation of small injuries.
This is not alarmist. According to statistics, between 2005 and 2006, the rate of diabetes with hearing impairment was 1/3 higher than in 1988-1995. It ‘s true that the fifth sense of protection is that Walkmans and headphones are an important part of the development of human science and technology. They have long been an irreplaceable necessity in people ‘s daily entertainment.It is not difficult.
Friends who like to listen to songs, may wish to listen to the small suggestions from Huohu.com Health Station.
Turn down the volume as much as possible indoors: Generally speaking, in a quiet environment, set the volume to a level that you can just hear clearly.
For headphones, the volume should be adjusted so that the surrounding conversations can be clearly heard; for in-ear headphones, you can pick up the headphones on one side and adjust the volume on the other side to be similar to the volume of the conversation.
When you need to increase the volume, it is best not to exceed 60% of the maximum volume.
Outdoors should be effectively shielded from noise: in fact, when the week is suffering from stray environmental noise and it is difficult to hear when the size is higher, you should decisively turn off the walkman with both hands.
If you have to listen to songs in such a high-decibel environment, you may want to use in-ear, earphones or headphones that are better at shielding external noise.
When most of the external noise is shielded, the set volume will naturally be much lower.
Do not use headphones in series: Generally speaking, do not use the headphones for more than 2-3 hours per day (if the volume is aligned to the guidelines within 1 hour).
And sleeping with headphones is a bad habit to avoid.
Set the maximum volume: Many players can manually set the maximum volume limit, you can manually set the maximum volume to 60%, so that the volume will not be increased because of hand owes.
In addition, if you experience any hearing loss or ear discomfort, regular inspections can also help the injured ear get the most timely treatment.
Of course, there are many ways to protect your ears. Choose a suitable headset, moderate music, and healthy life.
In order to be able to hear the whispers of your lover in the twilight years, and to hear the sound of dew knocking on the leaves again, then start from now and start protecting our fifth feeling.