Luustonjohtoisissa

Luustonjohtoisissa is a Finnish term that translates to "bone-conducted" in English. It refers to a method of sound transmission where sound waves travel through the bones of the skull directly to the inner ear, bypassing the outer and middle ear. This is in contrast to conventional airborne sound, which travels through the air and vibrates the eardrum.

Bone conduction can be utilized in various applications. Hearing aids designed for individuals with certain types of hearing loss, such as conductive hearing loss or mixed hearing loss, may employ bone conduction technology. These devices are often attached to a headband or a small post surgically implanted behind the ear. The device vibrates, transmitting sound through the bones of the skull to the cochlea, where it is interpreted as sound.

Another common application is in bone conduction headphones. These headphones do not cover the ears but rest on the cheekbones or temples. They are popular among athletes and cyclists who need to remain aware of their surroundings while listening to music or taking calls. By leaving the ear canal open, users can still hear ambient sounds, enhancing safety.

The principle behind bone conduction is that the bones of the skull are good conductors of vibration. When stimulated, these vibrations are transmitted to the cochlea, the auditory organ within the inner ear. This bypasses any issues in the outer or middle ear that might impede the passage of airborne sound. While bone conduction can be an effective way to transmit sound, the fidelity and volume may differ from air conduction, and the experience can be perceived differently by individuals.