According to Lynne McTaggart (author of "The Field", which I am currently reading) the information is not stored in the brain at all; it is contained in the Zero Point Field (the subatomic field of quantum energy) and the brain is simply a receiver/retriever.
My layman's understanding of current medical science suggests that thought and memory are stored in the brain as a function of both the physical connections between nuerons *and* the electrical pulses themselves. So I bet you could gain a limited amount of information from a dead brain, if we had a much greater understanding of how the brain physically encodes it's information, and had the ability to look at every nueron in place (as opposed to cutting them out and making slides like we do today).
Implying that IceAgeCivilization is dead is not nice. Clearly, if he were dead, he would be in heaven.