Air conduction is how most sound reaches our ears, except for our own voice which is transmitted through bone conduction. Sound travels through the ear canal to the eardrum, causing it to vibrate and transmitting vibrations to the ossicles in the middle ear. These vibrations then travel to the cochlea in the inner ear, where they are converted into electrical signals and transmitted to nerve cells. Hearing tests can check air and bone conduction, and hearing loss can be treated with hearing aids or cochlear implants.
Air conduction is how sound reaches our ears. It’s how almost all sound is transmitted except for our voice. The listener’s voice is transmitted through bone conduction.
Sound travels through the ear canal to the eardrum through the process of conducting air, causing the eardrum to vibrate. These vibrations are transmitted to three smaller bones in the middle ear called ossicles. These vibrations, or sound waves, then travel into the cochlea. The ear canal is a tube that runs from the outer ear to the middle ear. It starts at the pinna, also known as the pinna, which is the outer part of the ear. The ear canal then travels to the eardrum.
The eardrum is a thin membrane that separates the outer and middle ear. This is where sound is transmitted to the ossicles, small bones that transmit sound to the cochlea. The cochlea is part of the labyrinth, or inner ear. The labyrinth consists of fluid-filled passages containing the vestibule of the ear, the cochlea, and the semicircular canals. He is responsible for hearing and balance.
The air conduction transmits the sound to the spiral shaped cochlea. The fluid inside the auger moves in response to the vibrations. The cilia within the cochlea then begin to move. This movement converts vibrations into electrical signals. These electrical signals are then carried to thousands of nerve cells via neurotransmitters or chemicals that transmit nerve impulses.
Hearing tests can investigate how well a person hears. There is a hearing test to check air conduction and bone conduction hearing. Air conduction, or pure-tone hearing testing, uses headphones and a series of short beeps at different intensities and intervals. The bone conduction test involves a bone oscillator, or vibrator, placed on the mastoid. The mastoid is a bone located behind the ear.
With air conduction hearing loss results from bone conduction testing are better. This difference is referred to as the air/bone gap. A hearing loss involving air conduction and bone conduction is called a mixed loss.
Air conduction hearing loss can be treated through the use of hearing aids. Hearing aids amplify sound. Cochlear implants are another hearing loss treatment option. These surgically implanted electrical devices, also referred to as bionic ears, provide a sense of sound for people with severe hearing impairment or for those who are considered profoundly deaf.
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