I just heard a scientist say that when frozen, frogs have NO brain activity, but that they can still be revived. Is this true? I knew that frogs could be frozen and revived, but I had never heard the claim about brain activity. If this is true, then when is a frog brain dead, and what is the difference between stasis and brain death; cell death? Is this why people think we could be frozen and later revived with our consciousness intact?