Déjà Vu – the experience of being certain that you have experienced or seen a new situation previously – you feel as though the event has already happened or is repeating itself. The experience is usually accompanied by a strong sense of familiarity and a sense of eeriness, strangeness, or weirdness. The “previous” experience is usually attributed to a dream, but sometimes there is a firm sense that it has truly occurred in the past.
Déjà Vécu – is what most people are experiencing when they think they are experiencing deja vu. Déjà vu is the sense of having seen something before, whereas déjà vécu is the experience of having seen an event before, but in great detail – such as recognizing smells and sounds. This is also usually accompanied by a very strong feeling of knowing what is going to come next.
Déjà Visité – a less common experience and it involves an uncanny knowledge of a new place. For example, you may know your way around a a new town or a landscape despite having never been there, and knowing that it is impossible for you to have this knowledge. Déjà visité is about spatial and geographical relationships, while déjà vécu is about temporal occurrences. Nathaniel Hawthorne wrote about an experience of this in his book “Our Old Home” in which he visited a ruined castle and had a full knowledge of its layout. He was later able to trace the experience to a poem he had read many years early by Alexander Pope in which the castle was accurately described.