Déjà vu is a French term which literally means 'already seen'. As the name suggests, it is a strange feeling that the current situation has happened before. It is an experience in which places seem familiar, although you have visited that place for the first time!!
Do you know what causes deja vu?
One of the prevailing theories suggests that sometimes, visual information from one of our eyes is transmitted a little late to the brain. So information from first eye reaches the brain first. Now, when the information from the other eye reaches the brain a little late, our brain receives the same information twice. Hence, the situation or place appears familiar. It appears as if we have seen it already, i.e., we experience déjà vu.
