HOW HEARING WORKS
The auditory system is very complex. It's important to understand how the hearing process works and to compare that with what happens when this process is disrupted. This knowledge will help you to feel more comfortable and confident in understanding your child's hearing levels and making decisions.
1. Sounds enter the ear canal and travel to the eardrum.
2. These sound waves cause the eardrum to vibrate, sending the bones in the middle ear into motion.
3. Tiny hair cells (cilia) inside the inner ear (cochlea) convert this motion into electric impulses/signals. The ear has over 25,000 tiny hair cells to help you hear the varying degrees of sound.
These impulses/signals go up to the hearing (auditory) nerve to the brain. The brain interprets the impulses/signals as sound and gives meaning to the information.
If any part of the outer, middle, or inner ear isn't working properly, the ability to hear may be affected.
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