al ization , ▁respectively . ▁ ▁Ex periment ▁A ▁study ▁by ▁Chris ▁Mou lin ▁of ▁Le eds ▁University ▁asked ▁ 9 2 ▁volunte ers ▁to ▁write ▁out ▁" door " ▁ 3 0 ▁times ▁in ▁ 6 0 ▁seconds . ▁In ▁July ▁ 2 0 0 6 ▁at ▁the ▁ 4 th ▁International ▁Conference ▁on ▁Memory ▁in ▁Sydney ▁he ▁reported ▁that ▁ 6 8 ▁percent ▁of ▁volunte ers ▁showed ▁sympt oms ▁of ▁jamais ▁vu , ▁such ▁as ▁beginning ▁to ▁doubt ▁that ▁" door " ▁was ▁a ▁real ▁word . ▁Dr ▁Mou lin ▁bel ieves ▁that ▁a ▁similar ▁brain ▁fat igue ▁under lies ▁a ▁phenomen on ▁observed ▁in ▁some ▁sch iz op hren ia ▁patients : ▁that ▁a ▁familiar ▁person ▁has ▁been ▁replaced ▁by ▁an ▁imp ost or . ▁Dr ▁Mou lin ▁suggests ▁they ▁could ▁be ▁suffering ▁from ▁chron ic ▁jamais ▁vu . ▁ ▁C aus es ▁Jam ais ▁vu ▁can ▁be ▁caused ▁by ▁ep ile ptic ▁se iz ures . ▁ ▁Rel ated ▁phen omena ▁ ▁Dé jà ▁vu : ▁having ▁the ▁strong ▁sens ation ▁that ▁an ▁event ▁or ▁experience ▁being ▁experienced , ▁has ▁already ▁been ▁experienced ▁in ▁the ▁past , ▁whether ▁it ▁has ▁actually ▁happened ▁or ▁not . ▁In ▁French , ▁this ▁means ▁' al ready ▁seen '. ▁ ▁T ip ▁of ▁the ▁tongue : ▁almost , ▁but ▁not ▁quite , ▁remember ing ▁something . ▁ ▁See ▁also ▁ ▁Cap gr as ▁del usion ▁( the ▁del usion ▁that ▁a ▁friend ▁or ▁relative ▁is ▁an ▁imp ost or ) ▁C rypt om