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Jamais vu: the science behind the eerie opposite of deja vu

September 16, 2023 · Comment icon 12 comments



Have you ever had the feeling of jamais vu ? Image Credit: Pixabay / blueberrykings111
Psychologists Akira O'Connor and Christopher Moulin explain their research into the mysterious feeling of jamais vu.
Repetition has a strange relationship with the mind. Take the experience of déjà vu, when we wrongly believe have experienced a novel situation in the past - leaving you with an spooky sense of pastness. But we have discovered that déjà vu is actually a window into the workings of our memory system.

Our research found that the phenomenon arises when the part of the brain which detects familiarity de-synchronises with reality. Déjà vu is the signal which alerts you to this weirdness: it is a type of "fact checking" for the memory system.

But repetition can do something even more uncanny and unusual. The opposite of déjà vu is "jamais vu", when something you know to be familiar feels unreal or novel in some way. In our recent research, which has just won an Ig Nobel award for literature, we investigated the mechanism behind the phenomenon.

Jamais vu may involve looking at a familiar face and finding it suddenly unusual or unknown. Musicians have it momentarily - losing their way in a very familiar passage of music. You may have had it going to a familiar place and becoming disorientated or seeing it with "new eyes".

It's an experience which is even rarer than déjà vu and perhaps even more unusual and unsettling. When you ask people to describe it in questionnaires about experiences in daily life they give accounts like: "While writing in my exams, I write a word correctly like ‘appetite' but I keep looking at the word over and over again because I have second thoughts that it might be wrong."

In daily life, it can be provoked by repetition or staring, but it needn't be. One of us, Akira, has had it driving on the motorway, necessitating that he pull over onto the hard shoulder to allow his unfamiliarity with the pedals and the steering wheel to "reset". Thankfully, in the wild, it's rare.

Simple set up

We don't know much about jamais vu. But we guessed it would be pretty easy to induce in the laboratory. If you just ask someone to repeat something over and over, they often find it becomes meaningless and confusing.

This was the basic design of our experiments on jamais vu. In a first experiment, 94 undergraduates spent their time repeatedly writing the same word. They did it with twelve different words which ranged from the commonplace, such as "door", to less common, such as "sward".

We asked participants to copy out the word as quickly as possible, but told them they were allowed to stop, and gave them a few reasons why they might stop including feeling peculiar, being bored or their hand hurting. Stopping because things began to feel strange was the most common option chosen, with about 70% stopping at least once for feeling something we defined as jamais vu. This usually occured after about one minute (33 repetitions) - and typically for familiar words.

In a second experiment we used only the word "the", figuring that it was the most common. This time, 55% of people stopped writing for reasons consistent with our definition of jamais vu (but after 27 repetitions).
People described their experiences as ranging from "They lose their meaning the more you look at them" to "seemed to lose control of hand" and our favourite "it doesn't seem right, almost looks like it's not really a word but someone's tricked me into thinking it is."

It took us around 15 years to write up and publish this scientific work. In 2003, we were acting on a hunch that people would feel weird while repeatedly writing a word. One of us, Chris, had noticed that the lines he had been asked to repeatedly write as a punishment at secondary school made him feel strange - as if it weren't real.

It took 15 years because we weren't as clever as we thought we were. It wasn't the novelty that we thought it was. In 1907, one of psychology's unsung founding figures, Margaret Floy Washburn, published an experiment with one of her students which showed the "loss of associative power" in words that were stared at for three minutes. The words became strange, lost their meaning and became fragmented over time.

We had reinvented the wheel. Such introspective methods and investigations had simply fallen out of favour in psychology.

Deeper insights

Our unique contribution is the idea that transformations and losses of meaning in repetition are accompanied by a particular feeling - jamais vu. Jamais vu is a signal to you that something has become too automatic, too fluent, too repetitive. It helps us "snap out" of our current processing, and the feeling of unreality is in fact a reality check.

It makes sense that this has to happen. Our cognitive systems must stay flexible, allowing us to direct our attention to wherever is needed rather than getting lost in repetitive tasks for too long.

We are only beginning to understand jamais vu. The main scientific account is of "satiation" - the overloading of a representation until it becomes nonsensical. Related ideas include the "verbal transformation effect" whereby repeating a word over and over activates so-called neighbours so that you start off listening to the looped word "tress" over and over, but then listeners report hearing "dress," "stress," or "florist".

It also seems related to research into obsessive compulsive disorder (OCD), which looked at the effect of compulsively staring at objects, such as lit gas rings. Like repeatedly writing, the effects are strange and mean that reality begins to slip, but this might help us understand and treat OCD. If repeatedly checking the door is locked makes the task meaningless, it will mean that it is difficult to know if the door is locked, and so a vicious cycle starts.

Ultimately, we are flattered to have been awarded the Ig Nobel prize for literature. The winners of these prizes contribute scientific works which "make you laugh and then make you think". Hopefully our work on jamais vu will inspire more research and even greater insights in the near future.

Akira O'Connor, Senior Lecturer in Psychology, University of St Andrews and Christopher Moulin, Professor of cognitive neuropsychology, Université Grenoble Alpes (UGA)

This article is republished from The Conversation under a Creative Commons license. Read the original article. The Conversation

Source: The Conversation | Comments (12)




Recent comments on this story
Comment icon #3 Posted by Wistman 11 days ago
Deja beh: when you get the feeling that you are pursuing a wonderful career but in reality only have a crappy job that you hate.
Comment icon #4 Posted by simplybill 11 days ago
Im not sure if its the same thing as jamais vu, but a few years ago I was signing in at a hotel when I suddenly realized Id forgotten how to write the letter p. I stood there at the front desk for a few moments with a feeling like I was in the Twilight Zone, and at the same time feeling alarmed that this was a classic symptom of dementia. I knew the shape of the letter, but in my mind I was rotating an image of the shape, rotating between p q b and the number 9. I recovered quickly, but it was an uncomfortable, surreal experience that fortunately hasnt been repeated.
Comment icon #5 Posted by quiXilver 11 days ago
Jamais vu is a rather common experience among those who pursue meditation and is well documented in established lineages. While disconcerting to the experiencer, it does not necessarily imply breakdown of the cognitive function, but is often a symptom of rewiring of certain types of assumptions that go along with the perceptual modeling process. When the familiar world of perception unfolds into new avenues of interpretation, the familiar is often experienced as brand new, or never before really seen. Some folks experience a mild version of this after being intensely sick and bed bound or ho... [More]
Comment icon #6 Posted by Alchopwn 10 days ago
Wow Bill, that's some late onset dyslexia. Please don't take offense, but in your shoes I'd get a mental health checkup; not for any level of craziness, but for fear of some of those old folks mental diseases settling in. We can medicate some of those now.
Comment icon #7 Posted by fred_mc 10 days ago
Yes, this has happened to me, that while driving to work the road has suddenly felt unfamiliar.
Comment icon #8 Posted by Occupational Hubris 10 days ago
I feel like this after a really good trip
Comment icon #9 Posted by joc 10 days ago
I've had that experience several times as well. I'll be driving down the road and then just suddenly get the feeling I'm going the wrong way.
Comment icon #10 Posted by simplybill 10 days ago
No offense taken, Alchopwn. I appreciate your concern and your sound advice. Last year I asked my primary care physician to add a mental evaluation to my annual physical, so now therell be a baseline for future evaluations. In the meantime, Im putting more effort into keeping my mind active. Hopefully I can avoid the brain atrophy that can creep in during retirement.
Comment icon #11 Posted by quiXilver 10 days ago
I lost my Mum to dementia and it was absolutely brutal on our family. She lost most of her ability to relate to us and all but a few of her associative memories were entirely gone. Her body kept going for years, but everything that made her my Mother was dissolved, she was rendered a shell. Few years back after reading the many benefits of learning new skills in our +50's and how this helps maintain brain plasticity. Hoping to do something to stave off this potential in myself, I picked up a guitar and began learning from scratch, plodding along regularly. Even if it does nothing to stave ... [More]
Comment icon #12 Posted by Alchopwn 9 days ago
I'm pleased to hear it buddy. Look after yourself, and if this is a new thing, still consider a fresh check.


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