I have this sci-fi story concept where patients in a comatose state can have their brains stimulated with VR. For instance, the VR can be a dream "game" that helps the patient process trauma. I can see that this idea is morally questionable and invasive, but I was just wondering about the plausibility of the technology itself.
The only real-world knowledge I currently have is that some patients who came out of their comas said that they had the capacity to dream, while a few of them recounted endless nightmares. Hence, I would assume their brains could somehow be stimulated to dream, despite injury.
Would such a technology be plausible in a sci-fi setting?
EDIT: Thanks for the input, guys! Another point - to explain the complexity of the technology, I think an AI controlling the dream-game would make sense, as it would be able to process the great number of possibilities the patient wishes to take on their "journey", and it can "learn" the patient's brain such that the neural fibers will be easy to navigate. I hope that makes some sense.