Hearing Loss And How Hearing Really Works

When it comes to learning linguistics, culture or just to balancee our body

, hearing is very important to our body. Though it will be hard to imagine, people who have the normal sense of hearing will have a totally different world once they loss it. That is why it is important for people to know how hearing works and what are the usual causes of permanent hearing loss.

Five sections of the human body is actually involved for the hearing mechanism to actually work. Although they may seem small, these five sections: the inner, middle and outer ear, the acoustic nerves, and the brain's auditory processing centers, are the ones responsible for the hearing mechanism to work. Hearing loss can be experienced once any of these five sections encounters a problem as it is very important that they function together perfectly.

Sound vibrations from the environment are first collected by the outer ear that then funnels the collected vibration into the ear canal. The brain can process where a sound's origin is and how far it is with the help of the outer ear. The ear canal then follows the outer ear part and this prevents dusts and other tiny foreign matter from entering the ear.

After the ear canal, the eardrum then follows, and after this, the middle ear starts which then contains three very vital bones. The hammer, anvil and stirrups are the bones that are in the middle ear, together, they create a movement that is similar to the sound waves coming from the outer ear. Next, the movement from the middle ear is pushed on a membrane in the cochlea located in the inner ear.

A crucial part of the inner ear is the cochlea which is sometimes compared to a snail because of how it looks like. The cochlea is filled with fluid which is when disrupted stimulates the tiny hair cells, also found in the cochlea, when the mechanical energy is pushed on the membrane. These tiny hair cells are different from one another and they are stimulated by different sound frequency.

The next step is for the acoustic nerve to carry the signals converted to nerve impulses from the tiny hair cells to the brain. The central auditory system then processes the nerve impulse at it makes its way to the brain. A time stamp is then placed on the sound when the brain tries to differentiated it and localize it from other sounds.

These things, although microscopic in size, gives a person his or her ability to hear and more importantly understand sound. This can also help in understanding how we can prevent losing our sense of hearing since we now know the vital sections of our sense of hearing. In the next section, we tackle the causes of hearing loss in order to educate people and give them a chance to prevent it all together.

Birth defects or birth abnormality are not just the cause of hearing loss, a lot of different factors may contribute to a person's loss of hearing. Environmental or noise pollution that exceeds the normal values a person can safely tolerate can cause hearing loss in people. Hearing loss can also be caused by explosions or other loud noises even if the duration of the sound is brief.

Diseases are also another thing to look out for as some like meningitis and mumps can impair a person's hearing. Ototoxic chemicals that are present in herbicides and pesticides can also cause a person to lose their hearing. The information given in this article is useless unless put into action.

by: Joshua Johnson

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