Some people have such a significant lost in hearing that even a hearing aid device won't help them. Those people have gotten positive results from the cochlear implant. According to the textbook a cochlear implant is a tiny group of electrical cells that collect and send signals from the outer ear to the nerves of the brain. Its put in the inner ear and it is attached to a receiver that is implanted under the skin behind your ear at the base of the skull. World wide children and adults have received cochlear implant and without a doubt it has definitely helped and improved peoples ability to hear. Research shows that cochlear implants users perform significantly better on a variety of tasks than most hearing aid users that have a similar degree of hearing loss.
The patient in this video is someone that has had a cochlear implant. He explains how his hearing was before he had the implant done (For Example when he was a kid he said that when his parents called him or someone was talking to him his ears would vibrate) and he also talks about how much it helped and improved his hearing loss after the surgery.