There's always a bunch of people who don't like noisy environments, and headphones are a must-have item for them.
Whether it's commuting, working, studying or sleeping, as long as you wear headphones, you can swim in the ocean of sound anytime and anywhere, get massive information and auditory enjoyment.
Put on the headphones, turn up the volume, and the world is instantly "quiet".
But you know what?
Wearing headphones, something you might do every day, is quietly hurting your hearing.
According to data released by the World Health Organization, nearly 2.5 billion people worldwide are expected to have some degree of hearing problems by 2050. Without action, at least 700 million of them will need to seek ear and hearing care and other rehabilitation services.
Frequent wearing of headphones can lead to hearing loss
For many people, headphones are a necessity of life, and headphones bring great convenience to life and work.
However, due to the ultra-long wear and use, the headphones bring rich listening enjoyment at the same time, but also slowly damage our hearing!
People can hear sounds, which is a rather complicated process.
Sound is transmitted entirely to the brain and is the result of a joint effort between the outer ear, eardrum, middle ear and inner ear.
Sound vibrates the eardrum, and the three auditory ossicles behind the eardrum are responsible for amplifying the sound and transmitting it to the inner ear.
After the sound is transmitted to the inner ear, the auditory hair cells in the cochlea will convert the sound into electrical signals, and after the auditory nerve is transmitted to the brain, after the brain is integrated, we hear the sound.
When a person wears headphones, the external ear canal is in a closed state, the audio directly stimulates the cochlea, and the high-volume audio sound pressure directly enters the ear and is transmitted to the thin eardrum.
At the same time, the headphones rely on the diaphragm vibration of the earbuds to make sound, when wearing headphones, the distance between the diaphragm and the eardrum is very close, the range of sound wave propagation is small and concentrated, and the stimulation of the auditory nerves on the eardrum is relatively large.
For a long time, it is not only not conducive to blood circulation in the ear, but also easy to cause damage to the eardrum.
Wearing headphones for a long time will also lead to impaired inner ear nerve function, resulting in dizziness and tinnitus, memory loss, insomnia and other symptoms, which seriously affects normal work and study.
How severe is the hearing damage caused by wearing headphones
Our ears are quite sensitive to the perception of sound, and when the volume heard by the ear exceeds 85 decibels, it may cause auditory fatigue over a long period of time.
How big is 85 decibels?
Let's take an example: walking in a downtown, the sound you can hear is about 70 decibels, and 85 decibels is equivalent to the sound made by a car when it is traveling on a busy road.
When the volume reaches more than 110 decibels, it is enough to cause the auditory hair cells of the inner ear to die.
In general, the volume of the mobile phone is between 60 decibels and 90 decibels, while the volume output of the headset is generally around 84 decibels, and the volume of some high-frequency ranges can even reach 120 decibels.
If you listen to a song with headphones on for a long time, all the sounds heard are trapped in your ears and there is nowhere to escape. This volume stimulates the ear continuously and frequently, which will cause hearing loss.
And the damage caused by wearing headphones to the hearing is irreversible, the louder the sound, the longer the time, the more serious the damage to the hearing.
How should I protect my hearing in my daily life?
In general, adults should wear headphones for less than 3 hours a day.
Usually when listening to music, the headphone volume is best not to exceed 2/3 of the highest volume of the player, try to control the volume within 60 decibels, every half hour of listening, you have to take off the headphones to let the ears rest for a while.
In a noisier environment, try not to wear headphones, because in a noisy environment, if you want to hear the sound inside the headphones, it is necessary to increase the volume to exceed the sound emitted by the external environment, at this time, the volume received by the ear is relatively high, and the stimulation of the ear is larger.
If you need to work and have to use headphones, then it is best to choose headphones.
Headphones have a larger area of contact with the ear than earbud headphones, and headphones have a relatively small stimulation of the ear when hearing sound of the same volume.
bibliography:
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ZHANG Yun. Wear headphones often, do your ears agree[N]. Guangming Daily, 2022-01-08(007). DOI:10.28273/n.cnki.ngmrb.2022.000114.
LIU Zihan. Do you understand the exquisiteness of wearing headphones? Adolescent Health, 2018(06):46-47.
Qiang Jianhua. Hearing loss when you wear headphones often? [J].Traditional Chinese Medicine Health Care,2018,4(05):59.
[5]. Why can't I wear headphones for a long time? [J].Red Dragonfly,2021(26):14.
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