A pathway of hearing in which sound reaches the inner ear directly through skull vibration. This allows the sound to bypass the outer and middle ear.
During an audiologic assessment, bone conduction and air conduction measurements are compared to determine the location of the hearing loss. Bone conduction testing is performed by placing a vibrating mechanism on the skull (usually on the mastoid bone behind the ear). Bone conduction thresholds are plotted on the audiogram with the symbol > representing the left ear and the symbol < representing the right ear.
A traditional bone conduction hearing aid transmits sound to the inner ear via bone conduction by placing a vibration device on the head using a headband.