Hearing depends on a series of complex steps that change sound waves in the air into electrical signals. Our auditory nerve then carries these signals to the brain.
- Sounds enter the ear canal When these sound waves reach the ear, they travel down the ear canal and hit the eardrum, making it vibrate.
- The ear drum and bones of hearing vibrate Three tiny bones in the middle ear link the vibrating eardrum to a tiny bone structure in the inner ear called the cochlea.
- Fluid moves through the inner ear, The cochlea is filled with liquid that carries the vibrations to thousands of tiny hair cells.
- Hearing nerves communicate to the brain The movement in the fluid causes the cells to carry a message to the nerve that is connected to the brain, which turns the signals into what you hear.