Pig brains have been partly revived after death – what does this mean?

Pig brains have been partly revived after their bodies were killed. But what does this mean and how could it be used to help people in emergency situations?

Source:
https://www.newscientist.com/article/2200192-pig-brains-have-been-partly-revived-after-death-what-does-this-mean/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home