Hearing aids are currently an important tool and means for people with hearing impairments to improve their hearing. As an auxiliary device for hearing, hearing aids have been in people's sight for a long time and have been understood by people. But when it comes to hearing aids, many people still think that hearing aids are only for the elderly. Actually it’s not! Because hearing loss is not a “patent” for the elderly.
The ear is divided into three parts: the outer ear, the middle ear, and the inner ear. After external sound enters the human ear, it reaches the tympanic membrane through the external auditory canal, causing mechanical vibration of the tympanic membrane and ossicular chain. The vibration of the stapes footplate is transmitted to the perilymph of the inner ear through the vestibular window. This pathway is called air conduction. Sound waves are transmitted into the perilymph of the inner ear and converted into liquid wave vibrations, which cause the basilar membrane to vibrate. The stereocilia of the spiral organ hair cells located on the basilar membrane bend, causing electrical activity of the hair cells. The hair cells release neurotransmitters to excite the spiral ganglion cells. axon terminals, generating axonal action potentials. Nerve impulses travel along the brainstem auditory conduction pathway to the auditory cortex center of the temporal lobe of the brain to produce hearing.
There is another way for sound to enter the human ear, and that is bone conduction: sound is conducted to the inner ear through the skull, causing the inner ear lymphatic fluid to fluctuate accordingly, causing the basilar membrane to vibrate and produce hearing.
In the above two conduction pathways, no matter which link has a problem, it may lead to hearing loss. In life, there are many factors that may cause hearing loss:
1. Excessive ear cleaning or trauma, causing damage to the tympanic membrane.
2. Caused by diseases of the five sense organs, such as otitis media, rhinitis, etc.
3. Caused by cardiovascular and cerebrovascular diseases, such as high blood pressure.
4. Caused by excessive work pressure, such as excessive fatigue and poor rest.
In the above two conduction pathways, no matter which link has a problem, it may lead to hearing loss. In life, there are many factors that may cause hearing loss:
1. Excessive ear cleaning or trauma, causing damage to the tympanic membrane.
2. Caused by diseases of the five sense organs, such as otitis media, rhinitis, etc.
3. Caused by cardiovascular and cerebrovascular diseases, such as high blood pressure.
4. Caused by excessive work pressure, such as excessive fatigue and poor rest.
Hearing impairment brings a lot of troubles to people’s life, study and work. Hearing-impaired people can't hear clearly or hear the wrong words, which leads to difficulty in learning, difficulty in communication, trouble at work, or embarrassment and trouble, making the hearing-impaired people gradually isolated from society.
Hearing impairment can also bring discrimination to people in life or employment, causing psychological inferiority, high pressure, depression, withdrawal, unwillingness to communicate with others, and the formation of withdrawn personality, irritability, and bad temper. .
Hearing loss affects the development of the central nervous system, leading to atrophy of the auditory nerve, slower hearing, and slower brain thinking.
After discovering hearing loss, you should first seek medical treatment in time to restore hearing through medical means. Some people need to choose hearing aids and other hearing aids in time to improve their hearing due to missing the best treatment opportunity and other reasons. Improve your life to prevent further hearing loss.