Cranial bone vibration for cochlear stimulation

"Cranial bone vibration for cochlear stimulation" refers to the technique of delivering sound to the cochlea by producing vibrations in the skull bones, bypassing the outer and middle ear structures. This principle underlies bone conduction hearing devices, where a sound processor converts sound waves into mechanical vibrations, which are transmitted through cranial bones directly to the cochlea. The mechanical energy stimulates the cochlear fluids and structures, ultimately resulting in auditory perception much like natural hearing. Devices exploiting this principle are used to treat hearing loss in patients who cannot use conventional air conduction hearing aids, particularly those with conductive or mixed hearing loss, or single-sided deafness. The mechanics involve direct bone vibration, typically via a surgically implanted or externally applied actuator, and rely on skull bone properties including thickness and placement for optimal energy transmission.

Other names

Bone conduction hearingBone-conducted stimulationCranial bone conductionBone-anchored hearing stimulation

Mechanical vibration of cranial bones transmits sound energy to the cochlea, bypassing traditional air conduction pathways