[MarMema]

Perhaps. There were physicians who made the claim though. One is here

"Most of what remains of her brain is essentially a fluid filled sac surrounded by a thin shell of brain tissue rather then the solid structure we normally associate with a brain."

This one seems to be unaware of the more recent focus on the hypothalamus as the seat of self-awareness. He goes on to say about Terri - "The deeper parts of her brain including the hypothalamus and brain stem (not shown in the scan) remain intact and these continue to function to cause wakefulness and regulate other automatic body functions. These deeper areas are more resistant to anoxic damage and so were for the most part uninjured from her cardiac arrest."

They say ignorance is bliss.

[MarMema]

Some recovery cases above...

[kozachka]

"Most of what remains of her brain is essentially a fluid filled sac surrounded by a thin shell of brain tissue rather then the solid structure we normally associate with a brain."

That pretty much accurately describes the findings at autopsy of the cerebral cortex.