Mechanism of Hearing
Sound waves are longitudinal waves.
motion of air molecules associated with sound.
Longitudinal wave: Wave in which particles of the medium move in a direction parallel to the direction that the wave moves.
Transverse waves: Always characterized by particle motion being perpendicular to wave movement.
Sound waves at different pressures vibrant eardrum.
Middle ear bones are set in motion.
Bones amplify (about 20x).
Transmit sound to fluid of cochlea through oval window.
Cochlea transduces sound waves into action potentials.