General Discussion
In reply to the discussion: Bullies Throw Deaf Student’s Backpack In A Toilet, Then Mom Pulls Him Out Of School [View all]lapislzi
(5,762 posts)They are not "hearing aids" in the traditional sense of the term. A hearing aid amplifies the sound going into your ear and down the auditory nerve. Cochlear implants bypass the auditory nerve completely. They are implanted in your brain to receive sound as a substitute for the auditory nerve, which is severed during the implantation surgery. The receiver is fixed to the scalp via a magnet inside your head. After implantation, the user works with a therapist to reprogram the brain to "understand" the sound coming in.
However, you're correct that when the device is disconnected or otherwise not in use, the user is completely deaf. Total silence. Would not hear a fire alarm going off next to their own head. It's vital to keep the batteries fresh and charged at all times.