Hearing is one of the five senses that enable live creatures, man to be specific to carry on their daily activities. The ear is the organ that is used for hearing. It is a small organ, which allows a very complicated and scientific hearing process. The ear is made up of:
- The outer ear; which comprises of the ear canal and the eardrum, which is the exterior part of the ear, which receives sound signals.
- The middle ear; is the space behind the eardrum, which comprises of the ossicles, which actually encode the received signals.
- The inner ear; comprises of the choclea, which cause changes in movement of the hair cells.
Naturally, the sound waves enter the ear through the outer ear. Through the ear canal, the waves get inside and hit the eardrum .The eardrum vibrates on receiving the sound waves transmitting those waves to the smaller tiny ossicles. The eardrum vibrates faster from high-pitch sounds while loud sounds move the eardrum in a greater distance. As a safety mechanism, the eardrum becomes more rigid on detection of prolonged exposure to loud noises, neutralizing the noise.
From the eardrum to the ossicles, there is transmission of vibrations fro a large low-pressure area to a smaller area, thus the vibrations are of higher pressure. The ossicles consist of the malleus, the incus and the stapes, which are the smallest bones in the human body. It is in these bones that the vibrations are amplified to be able to move through to the inner ear.
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In the inner ear, the sound is transmitted through the fluid, unlike through air as in the outer ear. The amplified vibrations cause the cochlea in the inner ear to generate nerve impulses transmitted to the brain through the fluid. Sensory hair cells are triggered to generate these impulses and send them to the brain. The brain does the whole encoding process of the sound waves. It has the ability to distinguish between impulses high-pitch and low-pitched sounds.
The electric pulses are just raw data sent and the brain is the central body computer, which interprets everything. It is a whole complex scientific process and the scientists are yet to fully understand how the brain just gets to do it. On interpreting the impulses, the brain then decodes the received impulses and then generates a feedback, which is sent back or signaled to the organ to respond. The feedback is mainly by doing something or taking back. The whole process is just so fast this increases the mystery behind the whole hearing process.
For the sake of those experiencing hearing loss, the whole hearing process is translated into the hearing aid, and even if its may not be as efficient as the normal ear, it helps a big deal.
It is important to understand the basic hearing process of human beings both for our good and for the sake of satisfying our curiosity. This knowledge enables you to know and detect when something is wrong with your hearing and start of hearing loss, which eventually leads to deafness. How human beings hear is the same as how most animals hear, although some animals such as the fish have more complex hearing processes. Now that you have an idea how you hear, take responsibility of your hearing and enjoy the benefits of proper hearing.