You just made me remember a scifi story I read probably 10-15 years ago that I really wish I could recall the name of, as I'd love to read it again. In the story a man is awakened from an especially long cryogenic sleep, and his brain was implanted into a new body since the old one was no longer viable. In addition, he was given a brain implant with a screen in his eye that could be activated by a couple of quick blinks. At first he has the mind of a child, but slowly regains his faculties over many weeks or months, with the aid of the implant.