What exactly is deja vu and why does it occur?

Yes, a deja vu could also occur in a familiar situation, but there is so strong a possibility that it would be a forgotten memory that any credibility as an actual deja vu must generally be dismissed, or certainly not provable.Neglect those silly phenomena and MOVE ON. read more

So far there is no simple explanation as to why déjà vu occurs, but advances in neuroimaging techniques may aid our understanding of memory and the tricks our minds seem to play on us. read more

Déjà vu in healthy participants is reported as a memory error which may expose the nature of the memory system. Some researchers speculate that déjà vu occurs due to a discrepancy in memory systems leading to the inappropriate generation of a detailed memory from a new sensory experience. read more