Q: What happens when you have a Déjà vu?

A: “Déjà vu” is a French term meaning “already seen.” That uncanny sensation that you’ve already experienced something, even when you can’t recall having done so. Estimates are that 60-80 percent of the population may experience this phenomenon, commonly occurring in young adults. No one single cause has been identified. It can occur in conjunction with a brief electrical malfunction similar to what happens during a temporal lobe seizure. General consensus is that it relates to memory in some way. You might have experienced a similar event before and just can’t remember it. Or according to Epigenetics, since you may have cellular memory from the past several generations of biological ancestors, one of them might have experienced a similar event that leads you to feel like it happened to you previously.