Hearing devices have been around for hundreds of years. The earliest were earhorns that acoustically drove sound from an area into the ear. These were replaced with electrical devices, known as body aids, in the 19th century. These body aids soon became obsolete when large, analog behind-the-ear hearing aids were popularized in the mid-20th century.
We hear when sound enters your ear canal, moves through your middle ear, and into your cochlea. The cochlea (hearing nerve), transmits electrical stimuli to your brain via tiny hair cells. Through a number of things, including aging, noise exposure, and genetics, these hair cells can be damaged. Onc