[LargoLasskhyfv]

That is the common way of current understanding. But there is problem.

So called 'terminal lucidity' exists sometimes.

One theory is that is enabled by the immune systems shutdown, so inflammation ceases to interfere for a short time.

The problem with that is it still fails to explain the few cases, where shortly post-mortem it is found that there is not much healthy/able to function somewhat normally brain left to speak of.

Rather 'spooky'.