Time speeds up or slows down.
Thought-processes speed up.
A return of scenes from the past.
A sudden insight, or understanding.
A feeling of peace or pleasantness.
A feeling of happiness, or joy.
A sense of harmony or unity with the universe.
Confrontation with a brilliant light.
The senses feel more vivid.
An awareness of things going on elsewhere, as if by extrasensory perception (ESP).
Experiencing scenes from the future.
A feeling of being separated from the body.
Experiencing a different, unearthly world.
Encountering a mystical being or presence, or hearing an unidentifiable voice.
Seeing deceased or religious spirits.
Coming to a border, or point of no return.