First, I want to introduce how hearing work in the auditory system. “The ear hear sound which must know follow the four part of basic form energy transformation from the auditory system. The first part of the transformation is the vibrating air molecules enter into the ears. Some sound go to the external canal of the ear directly and the external ear, or pinna. The sound wave travels along the canal which meets the eardrum. It’s pressure variation set the eardrum into motion.” (Richard&Philip,2008)Pg114
The second part of the transformation occurs in “the cochlea the airborne sound wave becomes seaborne. The cochlea is a fluid-filled coiled tube which has a membrane . It is the basilar membrane, running down Its middle along its length”.( Richard&Philp,2008) Pg114-115
The third part of the transformation is “the hair cells bend which stimulate nerve ending and transform the mechanical vibrations of the basilar membrane into neural activity”.
(Richard&Philp,2008)Pg114-115
The fourth part is “the fibers of the auditory nerve meet in the cochlear nucleus of the brain stem. The crossing over of nerves in the visual system which stimulate from one ear goes to both side of the brain. Auditory signals pass through a series of other nuclei on their way to the auditory, cortex, in the temporal lobes of the cerebral hemispheres. The signal is higher-order processed by the auditory cortex”. (Richard&Philp,2008)Pg115
Hearing effects the every part of our lives. It can help us to communicate with others and listen the music for relaxing. It is so important for our daily life. If we have a good hearing which can help us to build up a good relationship with our friends and family. The good hearing is not only has a benefit for you and it also make positive effect to the our family and other people.
The Essay on Sound Waves Travel In Different Material
A sound wave is a disturbance. When it travels through air, it bounces the air molecules around and they vibrate. They then hit other molecules and cause a chain reaction. In a different material, such as metal, sound actually travels faster. this is because the molecules are much more tightly packed (water is not dense because the molecules just roll over each other, and air is even less dense, ...
Then, the good hearing can help us to experience life more active and less the restriction. In this way, we can have own perfect life.
Also, the hearing enhance people’s working and learning’ efficiency. For instance, the students can clearly hear what the teacher teach the course. Hearing can help the employee who can clearly hear the order from the employer. It can enhance the employee’s working efficiency.
On the other hand, I want to describe what the type of the hearing impairment. Some people may face the hearing impairment in their life. “The two general types of hearing impairment are each caused by a defect in one or more of the components of the auditory system. The conduction deafness which is a problem in the conduction of the air vibrations to the cochlea. Also, the more serious type of impairment in nerve deafness a defect in the neural mechanisms that create nerve impulse in the ear or relay them to the auditory cortex”.
Next, I will describe the deaf person who will face some difficult in their life.
First, the deaf person are so difficult to communicate with the hearing person. The hearing person don’t know the meaning of sign language. In this case, the deaf person don’t only learn the sign language, they are also learn lipreading which can help them understand what the people say something. But sometimes they may misunderstand the meaning.
Second, the deaf people can’t enjoy TV programme or movie same with the normal people. They only watch the tv programme’s or movie subtitles to know the meaning. They can’t feel the whole tv programme or movie’s atmosphere.
The Essay on Hearing People Deaf Community Emergency
... at school, etc. All of these which hearing people take for granted. This means that a deaf person is often found in situations where ... individuals who lost their hearing later in life. The 'Deaf Community', a heterogeneous mix of people from all walks of life, represents every socio- ... to college or ever holding more than a minimum-wage job. Several studies have reported a higher incidence of substance ...
Third, the deaf drivers must pay attention when they drives on the road. It is because they can not hear the traffic noise.
Fourth, the deaf person are so difficult to find a job. It is because the employers want to hire the hearing person to work their job. They may think the deaf person who may not to suit their job. In fact, the deaf person can not suit many type of the job. When they find the job, they usually seek help from the social community.
Fifth, the deaf person can’t learn at the traditional school. Because of the traditional schools are not enough resource and facilities for them to learn. Special school for the deaf help the young people learn how to communicate with other people and useful skills to apply in their life and work.
Sixth, the deaf person sometimes feel alone. They only in a group of people. The people may be their family and a small portion of their friend. They must need overcome the loneliness.
In my conclusion, hearing is so important for each people. If the people have a good hearing, they can communicate with the people efficient. We need to careful protect our hearing. For instance, if you work at the noise environment, you need to wear the ear protectors. It can protect your auditory system. It will reduce damage to the hearing.
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Reference:
http://science.howstuffworks.com/life/human-biology/hearing.htm
http://www.hear-the-world.com/en/hearing-and-hearing-loss/how-hearing-works.html
http://www.ehow.com/list_6023189_issues-deaf-people-face.html
Richard,J.& Philip,G.(2008).Psychology and life:Pearson Education Inc.
