Deja vu’s lesser-known opposite: why do we experience jamais vu?
Sep 26, 2023
15:00
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Explore the concept of Jamais Vu, a phenomenon where something familiar feels unfamiliar. Discusses personal experiences and the relationship between Jamais Vu and memory. Explores the terminology, experiment, and causes of Deja Vu and Jamais Vu. Examines the link between Deja Vu and Jamais Vu, proposing a misfiring of a familiarity signal in the brain. Questions whether Deja Vu is an error or a normal memory process.
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Quick takeaways
Jamais vu is the sensation of unfamiliarity for something that should be familiar, and it can manifest in various tasks and activities.
Jamais vu provides insights into consciousness and the separation of memory feelings from memory systems, shedding light on healthy memory function.
Deep dives
The Inappropriate Sensation of Jamivu
Jamivu is the sensation of unfamiliarity for something that should be familiar. It can manifest in various tasks, such as writing, hearing music, or driving repetitively. The experience involves the word or task losing meaning and appearing as a collection of letters or unfamiliar actions. Dr. Akira Okona, a senior lecturer in psychology, conducted research on Jamevoo, which led to winning the Ignoble Prize. This phenomenon is categorized as a dissociative memory experience, where feelings of familiarity dissociate from what is known to be true about memory.
The Experiment and Findings
Dr. Okona's team conducted an experiment with undergraduates. They instructed participants to write words repetitively and note when the words started feeling strange. About two-thirds of the participants experienced Jamevoo after approximately 30 repetitions or a minute. Descriptions of the experience aligned with what researchers had observed. The word broke up, lost its meaning, and became a mere group of letters. Interestingly, individuals who reported frequent Deja Vu also experienced Jamevoo more often.
Understanding the Brain Mechanisms
Deja Vu and Jamevoo are considered dissociative memory experiences. The brain regions associated with feelings of familiarity and fact-checking play crucial roles. During these experiences, there can be a momentary errorful activation of a signal, indicating unfamiliarity or familiarity. The frontal cortex then cross-checks this information with what is known about memory, ultimately leading to an erroneous sensation. The ability to detect and correct these errors reflects healthy memory function. Additionally, Jamevoo provides insights into consciousness and the separation of memory feelings from memory systems.
There’s a sensation many of us might have experienced: when something routine or recognisable suddenly feels strange and unfamiliar. It’s known as jamais vu, or ‘never seen’. Research into this odd feeling recently won an Ig Nobel prize, which is awarded to science that makes you laugh, then think. Ian Sample speaks to Ig Nobel recipient Dr Akira O’Connor about why he wanted to study jamais vu, what he thinks is happening in our brains, and what it could teach us about memory going right, and wrong. Help support our independent journalism at theguardian.com/sciencepod
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