I don’t know, probably something like, “oh, that’s neat. Tell me more”. Then continue the conversation based on what they say. I’ve never talked to someone who’s had a near death experience so I’d be interested in what they had to say.

When in the process of dying your sight looses its peripheral vision first giving the appearance of a tunnel or shaft of light this fades as the remainder of your eyesight leaves you

Dreams maybe? Don’t really feel like we have done enough research on the brain to truly understand what happens... we only have the person’s first hand account. Who knows what it really is