Hearing and hearing seem to be only one word difference, and we often use them together in our daily lives. However, did you know that from a professional point of view, hearing and hearing are two different concepts?
listenfeel
Hearing is the sensation caused by sound waves acting on the auditory organs to excite the sensory cells and cause the impulse of the auditory nerve to send incoming information, which is analyzed by the auditory center at all levels.
listenPower
Hearing refers to the ability to activate the auditory organs and receive voice information.The effectiveness of its ability to use generally depends on whether the listening is attentive.
Hearing is an important sensory channel second only to vision.It plays an important role in people’s lives.
The sound wave frequency range that the human ear can feel is 16 to 20000 Hz, with 1000 to 3000 Hz being the most sensitive.In addition to the visual analyzer, the listening analyzer is the second most important remote analyzer for humans.
From the perspective of biological evolution, with the production of specialized auditory organs, sound has not only become a signal for animals to grab food or escape disaster, but also a tool for them to communicate with each other.
So, in daily life, how should we protect hearing?
Ten tips to protect hearing
1. The sound of earphones should not be too loud and the time should not be too long
Many students like to make the MP3 sound very loud, and they like to listen to it for a long time. This is all wrong.Middle school students should not listen to headphones for too long, no more than 30 minutes each time, and no more than 60 decibels.
2. Do your homework without listening to music
In the process of learning, students should not listen to music while doing homework. They should concentrate their energy, improve efficiency, and develop good habits.
3. Seek medical attention as soon as possible for hearing loss
In the process of listening to MP3, if middle school students have itchy ears, tinnitus, and have to raise their voice when speaking, this is a sign of hearing loss. Students should seek medical attention as soon as possible to avoid serious consequences.
4. Hearing loss caused by noise environment should be resolved within three weeks
Citizens should take appropriate measures to protect their hearing in their daily lives, such as avoiding long-term expectations in noisy places.Once it happens due to noiseHearing loss, You should go to a specialist hospital immediately. If the auditory nerve is damaged and edema is too long (more than three weeks), symptoms such as neurodegeneration, necrosis, and loss of auditory function will occur.
5. Stay away from noise and explosion sites.
For example, setting off firecrackers, because loud noises can cause noise-induced deafness, and explosions can cause blast deafness.
6. Stay away from tobacco, alcohol and ototoxic drugs http://www.jhhearingaids.com
Such as streptomycin, gentamicin, kanamycin, etc., because they are toxic to the auditory nerve.
7. Avoid hitting the head
Don’t hit the ears with palms. Hitting the head can cause hearing damage, and hitting the ears with palms can cause the tympanic membrane to rupture.
8. Master the correct method of blowing your nose when blowing your nose
The left and right nasal cavity should be blown one by one. Do not pinch the left and right nostrils at the same time, because there is a tube (eustachian tube) between the back of the nasal cavity and the middle ear cavity. Improper blowing of the nose can drive nasal secretions into the middle ear cavity. , Causing otitis media.
9. Whether it is suitable for flying
People with upper respiratory tract infection and Eustachian tube dysfunction should not travel by air, otherwise it may cause aviation otitis media, earache, tympanic membrane congestion, middle ear effusion, and even hearing loss.
10. Beware of other diseases
Deafness caused by systemic diseases is the first clinically recommended hypertension and arteriosclerosis, nephropathy, diabetes, hypothyroidism, etc. can also be caused, so patients with these diseases should monitor their hearing.
Author: Wu from China
