mdma wrote:
is it possible to use this method for patient with Persistent Vegetative State (PVS)?
Not if the god bothering nutjobs that currently run the USA have a say in it.
They just want to keep you "alive" in a PVS, but don't want to use technology that is "evil" and "not gods doing" to bring you out of it. ;-)
On the other hand, if you live in a free country such as any in Europe, and most of the far east. You'll be able to benefit from such technology as and when it becomes available.
Unless the technology happens to whiten teeth, or is a vitamin suppliment, in which case it's likely banned. ;-)