I wonder if any patients in coma's were considered. I'd think it would be tremendously valuable to compare the difference between a living and a 'dead' brain.

I wonder if any patients in coma's were considered. I'd think it would be tremendously valuable to compare the difference between a living and a 'dead' brain. *This might get into philosophical realm of brain dead vs alive. I'm just talking about 'active blood flow' and let the additional nuance about the other things be worried about by somebody who isn't me.