Deafness
Deafness and the difficulty or inability to use the sense of hearing due to a loss of hearing ability cofosis total or partial hearing loss, and unilateral or bilateral. Thus, a deaf person will be unable or have difficulty hearing. This may be a hereditary trait or may be a result of illness, trauma, long-term exposure to noise, aggressive or medicines to the auditory nerve.
To check the degree of deafness of a person, makes him an audiometry test, so that a deaf person may have problems in the correct perception of the intensity (dB) or frequency (Hz) of sounds related oral language, and often give different results for each ear. Loss of hearing is generally described as mild, mild, moderate, severe or profound, depending on the test. Usually, when a child whose hearing loss exceeds the 90 dB, it is then you need a specific educational method for the deaf.
We can consider various criteria to classify the different types of hearing loss or deafness.
- Depending on the location of the lesion.
- Depending on the degree of hearing loss.
- According to the causes.
- Depending on the age of onset of deafness.
If deafness is especially acute, it can affect the way the deaf person is related to its human environment, to meet a serious limitation in their ability to find a way of communication by the ear canal, ie the spoken language. However, the way they understand the consequences of this failure can vary considerably, so that two fundamental perspectives on how to understand deafness.
ONCE
It is not easy to summarize the reality of the National Organization of Spanish Blind (ONCE). The oldest institution, with nearly seventy years of history, has never wanted to have a day care is still a close, discreet and stable institution, avant-garde in specialized social services for people with visual disabilities, the key sector of the disability in the world ..., active agent, ultimately, society.The key to success is to be found in the support of the Spanish society that every day, gives us an exemplary lesson in commitment and loyalty to the acquisition of our game, a real economic engine.Personal autonomy, the educational, labor standards, universal accessibility through new technologies and the enjoyment of leisure and free time as development of the individual...