history, take a look at what it means to be deaf.
What Is It? 2e4g2c
Your ear is made up of three parts - the outer ear, the middle ear and the inner ear. They have to work together in order for you to hear properly, but if there's a problem with one or more parts of your ear, you may not be able to hear. That's what deafness is - partial or complete hearing loss.
What Causes It? 23674b
Deafness can be ed down in families or caused by long-term exposure to diseases like the measles, mumps or meningitis, that damage the ear.
Different Types 16g64
There are two main types of deafness. The most common type is conductive deafness, which is a form of partial hearing loss. It affects the outer and middle ears and is usually temporary. The other type is sensori-neural deafness, which is permanent. It's caused by a problem in the inner ear, usually in the cochlea (the part of your ear that's filled with tiny hairs).
Ways of Communicating 2l6t6v
Hearing-impaired people electrical signals that directly stimulate the auditory nerves.
Did U Know? 696k2p
- About three in 1,000 babies are born with hearing impairment, making it one of the most common birth defects.
- Like spoken language, different regions of the world use different forms of sign language.
- The huddle formation used by football teams originated at Gallaudet University to prevent other schools from reading their sign language.
- William Hoy, a deaf center-fielder for the balls and strikes in baseball.
- Ludwig van Beethoven lost his hearing in his twenties, but continued to compose what many believe is some of the greatest music ever written!
