How Your Brain Tricks You Into Déjà Vu

Déjà vu is the feeling that this exact moment has happened before, while part of you knows it can't have. Most of us have had it at least once, and today scientists can trigger it with an electrode, a list of words, even a video game. So what is your brain doing when the present feels like a memory, and why do some people get stuck there? Key terms: déjà vu ("already seen"), jamais vu ("never seen"), rhinal cortex, entorhinal cortex, hippocampus, temporal lobe, recollective confabulation. Chapters 00:00 Intro 00:32 Already seen 01:38 The stamp and the file 03:03 Déjà vu in the lab 04:45 Seeing the future 05:26 Your brain's fact-checker 07:09 Familiar, by mistake Sources Wells et al., Persistent psychogenic déjà vu: a case report (2014): https://link.springer.com/article/10.... Funkhouser, A brief history of déjà vu: https://deja-experience-research.org/... Wild, Déjà vu in neurology (2005): https://discovery.ucl.ac.uk/id/eprint... Dickens, David Copperfield, ch. 39 (1850): https://standardebooks.org/ebooks/cha... Brown, The déjà vu illusion (2004): https://homepage.villanova.edu/diego.... Hadzic & Andersson, Déjà vu meta-analysis (2024): https://www.frontiersin.org/journals/... SMU Research, interview with Alan S. Brown (2005): https://blog.smu.edu/research/?p=1058 O'Connor & Moulin, Déjà vu in healthy subjects (2013): https://www.frontiersin.org/journals/... IMDb, The Matrix (1999): https://www.imdb.com/title/tt0133093/... Eichenbaum et al., The medial temporal lobe and recognition memory (2007): https://pmc.ncbi.nlm.nih.gov/articles... Richardson & Winokur, Déjà vu in psychiatric and neurosurgical patients (1967): https://jamanetwork.com/journals/jama... Penfield & Perot, The brain's record of auditory and visual experience (1963): https://www.gwern.net/doc/psychology/... Bartolomei et al., Rhinal cortex in déjà vu, Neurology (2004): https://pubmed.ncbi.nlm.nih.gov/15365... Warren-Gash & Zeman, Is there anything distinctive about epileptic déjà vu? (2014): https://jnnp.bmj.com/content/85/2/143 BrainHealth.com (AAN), Déjà vu and epilepsy (2025): https://www.brainhealth.com/explore/n... Urquhart & O'Connor, Strangely familiar words, PeerJ (2014): https://peerj.com/articles/666 BPS Research Digest, Simulating déjà vu in the lab (Brown & Marsh 2009): https://bps.org.uk/research-digest/si... Cleary et al., Déjà vu in virtual reality (2012): https://cdn2.psychologytoday.com/asse... O'Connor & Moulin, Déjà vu in a healthy, blind male (2006): https://research-portal.st-andrews.ac... Moulin et al., The induction of jamais vu in the laboratory (2020): https://research-portal.st-andrews.ac... University of St Andrews, Ig Nobel Prize (2023): https://news.st-andrews.ac.uk/archive... APS, Déjà vu may feel like a premonition, but it's not (2018): https://www.psychologicalscience.org/... Neuroscience News, A postdictive bias associated with déjà vu (2019): https://neurosciencenews.com/deja-vu-... PsyPost, Illusory feelings of prediction (Huebert et al. 2025): https://www.psypost.org/new-psycholog... Urquhart et al., fMRI evidence for memory conflict in déjà vu (2018): https://research-repository.st-andrew... BBC Science Focus, What déjà vu says about your brain health (2025): https://www.sciencefocus.com/the-huma... ScienceDaily, Chronic déjà vu research, University of Leeds (2006): https://www.sciencedaily.com/releases... Moulin, Recollective confabulation, Cortex (2013): https://lead.ube.fr/wp-content/upload... Taiminen & Jääskeläinen, Déjà vu with amantadine and phenylpropanolamine (2001): https://pubmed.ncbi.nlm.nih.gov/11535... #dejavu #memory #explained