Déjà vu (‘already seen’) is the experience of feeling sure that one has already witnessed or experienced a current situation, even though the exact circumstances of the previous encounter are uncertain and were perhaps imagined. The term was coined by a French psychic researcher, Émile Boirac (1851–1917). The experience of déjà vu is usually accompanied by a compelling sense of familiarity, and also a sense of eeriness or strangeness.
It is difficult to evoke the déjà vu experience in laboratory settings, therefore making it a subject of few empirical studies. Certain researchers claim to have found ways to recreate this sensation using hypnosis. Déjà vu is is thought to be an anomaly of memory. In particular, it may result from an overlap between the neurological systems responsible for short-term memory and those responsible for long-term memory (events which are perceived as being in the past). The events would be stored into memory before the conscious part of the brain even receives the information and processes it.
The Daily Omnivore 
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