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Pharmacology Ĭertain combinations of medical drugs have been reported to increase the chances of déjà vu occurring in the user.

Certain forms of the gene are associated with a mild form of epilepsy, and, though by no means a certainty, déjà vu, along with jamais vu, occurs often enough during seizures (such as simple partial seizures) that researchers have reason to suspect a link. Although there is not currently a gene associated with déjà vu, the LGI1 gene on chromosome 10 is being studied for a possible link. Some research has looked into genetics when considering déjà vu. A 2008 study found that déjà vu experiences are unlikely to be pathological dissociative experiences. No special association has been found between déjà vu and schizophrenia. Įarly researchers tried to establish a link between déjà vu and mental disorders such as anxiety, dissociative identity disorder and schizophrenia but failed to find correlations of any diagnostic value. Migraines with aura are also associated with déjà vu. This experience is a neurological anomaly related to epileptic electrical discharge in the brain, creating a strong sensation that an event or experience currently being experienced has already been experienced in the past. It is now used internationally.ĭéjà vu is associated with temporal lobe epilepsy. He used it in his book L'Avenir des sciences psychiques.

The expression "sensation de déjà-vu" (sensation of déjà vu) was coined in 1876 by the French philosopher Émile Boirac (1851-1917). People who travel often, frequently watch films, or frequently remember their dreams are also more likely to experience déjà vu than others. Experiencing déjà vu has been correlated with higher socioeconomic status, better educational attainment, and lower ages. The phenomenon manifests occasionally as a symptom of pre-seizure auras, and some researchers have associated chronic/frequent "pathological" déjà vu with neurological or psychiatric illness. Approximately two-thirds of surveyed populations report experiencing déjà vu at least one time in their lives. It is an illusion of memory whereby - despite a strong sense of recollection - the time, place, and context of the "previous" experience are uncertain or impossible. For other uses, see Déjà vu (disambiguation).ĭéjà vu ( / ˌ d eɪ ʒ ɑː ˈ v( j) uː/ ( listen) DAY-zhah- VOO, -⁠ VEW, French: ( listen) "already seen") is a French loanword for the phenomenon of feeling as though one has lived through the present situation before.