[Spectre X]

Well, I'm not a scientist, but judging by the fact that he can still hear some sounds, it's not because of something wrong with his brain, but with its connection to his ear, or with the ear itself, in which case I would thinkt that he could maybe qualify for a special hearing aid or some fancy implant.

But please, correct me if I'm wrong. I'm just going on about what seems logical to me.