Brain experts explain deja vu as a memory glitch

Deja vu is a brief memory glitch where a new experience feels familiar, often due to brain systems falling out of sync. This phenomenon occurs when the brain signals familiarity without a verifiable memory, potentially caused by memory mismatches, processing delays, pattern recognition, or neural misfiring. While usually harmless and common, frequent or intense deja vu with other symptoms could indicate conditions like temporal lobe epilepsy, anxiety, or rare dementia-related issues.