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Speaking Deaf Babies.

How do we Hear?

One may experience hearing loss when there is a problem with the organs responsible for hearing in the outer ear, middle ear or inner ear. Outer ear is what one can see outside the head, pinna and the ear canal. Sound enters through the outer ear and passes through the ear canal as sound waves.

Middle ear consists of – ear drum and three small bones. Sound waves hit the ear drum and this force causes the three bones to vibrate.

The inner ear contains cochlea. It is a snail shaped membrane consisting of fluid and a large number of minute hair cells. The sound vibrations from middle ear cause movement in the fluid and the hair cells in the cochlea also move converting the vibrations into electrical signals and sends to brain through auditory nerve.
Hearing loss may occur either due to problems with the ear (outer, middle or inner) or the brain.

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