I know that a NDE is common in people who are in unfortunate situations such as a car crash and similar situations. Even if that person is physically unharmed, a NDE may still occur which I'm assuming is triggered by a mental state. In all cases I've read it seems that this happens when a person is 'caught off guard'. I've read a couple of books about 'death row' in America (interesting in its on way but definitely not something to read right before bed). What I've picked up on is that out of the majority of people who say their last words, they seem to talk about the crime they committed, or say sorry to the victims families and goodbye to their own. Now I know that doesn't seem weird, but there's none(that I've read anyway) that speak of strange happenings going on such as a NDE.. and knowing you're about 5mins away from death seems enough to trigger a mental response to cause a NDE to me. So what's the cause? When does it happen and why does it happen? Does knowing you're actually going to die in advance stop such an experience - and maybe not knowing you're about to die or close to death is what triggers an NDE?