For the bright light at the end of the tunnel, Brian said, “We know from experience tunnel vision emerges abruptly when you suddenly lose blood supply to the brain. The first thing you notice in fainting is the narrowing of vision, followed by blackness.”
He continued, “you could argue that’s the way in which death would progress as well because the same mechanisms are in place and it’s an interruption of blood flow to the brain.”
As per the visions of a movie reel of your life, Brian said, “the brain can create a visual world around you that resembles something close to reality that isn’t reality because you’re actually blind.”
What we have learned is that as the brain shuts down, the most complex components of human behaviour go first and then what’s remaining is the basal, primitive structures that all animals and the first humans have.