Wearing headphones for a long time not only damages your hearing, but it is difficult to reproduce and recover. Like other senses, there is a specialized hearing "receptor" in the ear - the cilia cells in the cochlea. We can hear the sound because the susceptor is stimulated and the cilia vibrate with the sound.
Once the cilia swing too hard, it can easily damage bad hearing. It is for this reason that you hear a loud blast and a short burst of "burst" after staying in a karaoke room for a long time. While wearing headphones does not clearly detect hearing changes, such damage is gradual and often overlooked. Excessive stimulation of the cilia of the cochlea can lead to reduced sensitivity, which can damage hearing in the long run.
Correct use of headphones to grasp three points
Over 85 decibels, damaged cochlear cilia cells
Of course, not all sounds can cause hearing impairment. The voice of a normal person is about 40-60 decibels, and the sound in class is about 70 decibels, but the volume when listening to headphones often goes above 85 decibels (more than 85 decibels can damage the cochlear cilia cells). Especially in noisy outdoor and public transportation environment, the external environment is too noisy. If you want to hear clearly the sound in the headphones, you must increase the volume, which will inevitably bring too much stimulation to the cochlea.
Most hearing-impaired patients are engaged in the customer service industry. Due to monaural stimulation, uncontrollable volume, and up to 8 hours of stimulation per day, many customer service personnel experienced heavy shocks and tinnitus, which is a manifestation of hearing impairment. Experts suggest that the volume of headphones to listen to music should be controlled within 2/3 of the maximum volume. It is advisable to debug as much as usual.
There are three major manifestations of impaired hearing in the ears: impaired high frequency, increased sensitivity, and decreased hearing.
High-frequency damage: Because music has many electronic sounds that are high-frequency sounds, wearing headphones most often results in high-frequency damage. However, this kind of hearing impairment is often not easy to detect. Since the ear can hear sounds at 150-8000hz, and people's audio is only at 250-2000hz, even if the high frequency is impaired, the influence on language communication is not great.
However, high-frequency damage may also be manifested as dizziness, dizziness, and head swelling. If you wear headphones for a long time and have the above symptoms, it is likely that your hearing has been damaged.
Increased sensitivity: Increased sensitivity to the ear can cause sounds to change little by little, making it difficult to accept. There are heavy shocks, tinnitus, ear plugs, dizziness and other symptoms, many customer service personnel have this problem.
Hearing loss: Hearing loss means you need to raise the volume to hear the sound. However, the feeling of sound is more subjective. In addition to the structure of the ear itself, it is also related to the environment and concentration. In a noisy environment, it is not easy to hear even loud sounds (not necessarily hearing impairment, but doing so for a long time can damage hearing). Therefore, once you feel hearing declining, it is best to check in the ENT hospital in time.
Correct use of headphones to grasp three points
The correct use of headphones
1, pay attention to the volume and use of time
Dizziness, tinnitus, ear plugs, or wearing headphones for more than 3-4 hours a day, are at high risk of hearing impairment. Experts suggest that the sound of wearing headphones should not exceed 2/3 of the maximum volume of the player. After listening for 30-40 minutes each time, the ears should be fully rested. The volume of the earphone should be as close as possible to the sound of a normal person, preferably 50-60 decibels, not more than 85 decibels;
Adults do not wear headphones for more than 3-4 hours a day, minors do not exceed 1-2 hours a day, and 30-40 minutes after wearing headphones, they must fully rest their ears.
2, headset headset is better than in-ear headphones, long-term use is recommended to choose the former.
For people who need to wear headphones for a long time, it is recommended to choose a headset. The in-ear earphone has a small sound contact area, and has a large pressure inside the cochlea. The earphone has a large contact area and a small pressure, and the stimulation to the cochlea ciliated cells is relatively small and safe.
In addition, the received sound can be transmitted through the skull in addition to the air conduction pathway. In particular, when students are listening, they can listen to headphones and wear headphones. They can also hear sounds and reduce the stimulation of the cochlea.
3, the use of headphones environment is also very important.
We can often see some young people in the noisy streets, listening while walking or listening to the car, or even listening to riding a bike, in fact, in a quiet environment, earphone damage to the ear is least, and then before going to bed Listening for a while can also reduce injuries, and ear damage can be greatest when using headphones on a noisy subway or on a car.
From the perspective of Chinese medicine, to protect hearing, we must create a "sound clear" environment. Humidity is a culprit in the destruction of the "sound-clear" environment. Humidity tends to cause "dampness" and the ears are not "clean." Therefore, from the point of view of TCM health care, it is best to eat cold and damp aquatic products with damaged ears. Mushrooms and other mushroom foods that grow in humid areas are not recommended to eat more. Grain intake should be the main factor.
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