Test: What is the "Mandela Effect" and how do neurophysiologists explain it?

June 30, 2026 · 6 min read

Question: What is the "Mandela Effect" and how do neurophysiologists explain it?

Perplexity

The "Mandela Effect" is a psychological phenomenon of false collective memory, where a large number of people are convinced of the authenticity of an event, fact, or image that never actually happened or was different in reality (for example, many remember Mickey Mouse having suspenders, or that the surname in the book "The Berenstain Bears" was spelled "Berenstein," although this is incorrect)[2][5]. This phenomenon is not related to travel between parallel universes, as sometimes hypothetically suggested in popular culture, but is a result of systemic errors in the functioning of the human brain, where a false memory is transmitted from one person to another and becomes entrenched in a group[2][3].

Neurophysiologists explain the Mandela Effect through the mechanism of confabulation and the reconstructive nature of memory: the brain does not store events as exact video recordings, but rather recreates them from individual elements when needed, independently "filling in the gaps" with details based on associations, stereotypes, and previous experience[2][4]. According to skeleton theory, the process of retrieving information from memory involves three stages: encoding, conceptualization, and the influence of the external environment, where the brain adds non-existent details to create a coherent picture, leading people to be confident that they precisely "remember" a non-existent fact[4]. The neurophysiological basis of memories is provided by long-term memory matrices (including the hippocampus), and шаблонное мышление (patterned thinking) and social confirmation are the most likely causes of false collective memories[3][5].

Sources:

Gemini

The "Mandela Effect" is a phenomenon where a large number of people share false memories of events that actually happened differently or not at all. The term was coined in 2010 by Fiona Broome, who noticed that many people were convinced Nelson Mandela had died in the 1980s, when in reality he passed away in 2013. This effect manifests in various areas, from history and politics to mass culture and cinema. For example, many remember Darth Vader's line as "Luke, I am your father," when in fact he said, "No, I am your father." There is also a widespread misconception that Boris Yeltsin uttered the phrase "I am tired, I am leaving," whereas he said, "I am leaving, I have done everything I could."

Neurophysiologists and psychologists explain the Mandela Effect by the imperfection of human memory. The main theory is that our memory is prone to distortions, omissions, and reconstructions. This phenomenon is called confabulation – when a person forms memories of events that did not happen or happened at a different time. False memories can arise due to misinformation, selective attention, or erroneous conclusions. In the modern world, the spread of information through the internet can exacerbate this effect, contributing to the dissemination of speculation and gossip. Some researchers also suggest that the Mandela Effect may be related to how the brain processes and modifies information, similar to autocorrect in text, adding or removing details for greater clarity.

Sources:

4brain Blog
Wikipedia
Kuprum
Reddit
IndiaStyle

ChatGPT

The Mandela Effect is a phenomenon of mass false memory, where a large number of people are convinced of the correctness of their recollection of an event or fact that actually happened differently or not at all. The term was coined in 2009 by researcher Fiona Broome after she discovered that many people mistakenly remembered Nelson Mandela dying in prison in the 1980s, when in reality he was released in 1990 and died only in 2013. This effect demonstrates how collective memory can be distorted and how widespread false memories can become ingrained in the minds of many people.

From a neurophysiological perspective, the Mandela Effect is explained by the peculiarities of human memory function. Memory is not a photographic snapshot of past events, but a reconstructive process susceptible to change. During recollection, the brain actively "assembles" data from various sources: personal experiences, stories from others, and cultural narratives. This process can lead to glitches and errors caused by information mixing, the influence of social consensus, and cognitive biases. Neurophysiologists note that the hippocampus and prefrontal cortex, which can modify or distort the original trace, actively participate in memory reproduction processes. Thus, the Mandela Effect is a result of both cognitive mechanisms and social interaction.

In summary, the Mandela Effect is not just about mistaken memories, but a complex phenomenon related to the dynamic nature of memory and the influence of collective consciousness. It serves as an important reminder of how susceptible our perception of reality and memory are to distortions, which is critical for understanding brain function and cognitive processes.

Sources:

Fiona Broome, Mandela Effect Explained
Scientific American, “Why Your Memories Are Often Wrong”
Frontiers in Psychology, “The Neural Basis of False Memories”

Grok

The Mandela Effect is a phenomenon of collective false memory, where a large group of people equally recall events, details, or facts differently than they actually happened. The name originated in 2009 thanks to paranormal researcher Fiona Broome: many were convinced that Nelson Mandela died in prison in the 1980s, although in reality he passed away in 2013 after his presidency. Classic examples include incorrect names like "Berenstein Bears" instead of "Berenstain Bears," the Fruit of the Loom logo, or details from movies and advertisements.

Neurophysiologists explain the effect by the peculiarities of human memory: it does not record events like a video recording, but constantly reconstructs them based on associations, schemas, and expectations. The hippocampus and prefrontal cortex play a key role – areas activated by both true and false memories. The brain fills in "gaps" through confabulation, merges similar images (schema effect), and is susceptible to social confirmation and repetition of information on the internet. Studies, including those on the "visual Mandela effect," show that false memories are often consistent among different people due to common neural mechanisms of encoding (engram) and processing visual information.

Thus, the effect does not indicate parallel realities, but illustrates the plasticity and vulnerability of memory to distortions. This is a normal cognitive process, amplified by mass culture and the digital environment.

Sources:

What Is the Mandela Effect? (verywellmind.com/what-is-the-mandela-effect-4589394)
Mandela effect (britannica.com/science/Mandela-effect)
Эффект Манделы (ru.wikipedia.org/wiki/Эффект_Манделы)
The Psychology Behind the Mandela Effect (psychologytoday.com/us/blog/unserious-psychology/202312/the-psychology-behind-the-mandela-effect)

Claude

What is the Mandela Effect and how do neurophysiologists explain it

The Mandela Effect is a phenomenon where many people have a false memory of an event. The term appeared in 2009 and is named after a common misconception: thousands of people were convinced that human rights activist Nelson Mandela died in prison in the 1980s, when in reality he died in 2013 and managed to become President of South Africa. In Russian examples, this is seen in Boris Yeltsin's phrase: people remember him saying "I'm tired, I'm leaving," although in reality he said "I'm leaving, I've done everything I could."

Scientists are confident that the Mandela Effect arises from the peculiarities of memory function. Neurophysiologists identify several mechanisms: psychologists explain the Mandela Effect by the fact that sometimes a person, recalling an event, modifies it in their consciousness or initially perceives the event incorrectly. Many examples of the Mandela Effect are related to so-called "schema-driven errors" – schemas are organized "packets" of knowledge that guide memory and facilitate understanding of material, but can create distortions. In addition, confabulation is a phenomenon where the brain fills in gaps in memory, and the mass nature of the Mandela Effect is linked to collective cognitive bias – people tend to trust the opinion of the crowd.

It is important to note that this is not a psychiatric disorder, but a normal feature of human memory function. Memory is not a perfect record of past events – it can change over time and with practice. This explains why different people independently form the same incorrect memories, based on the logic of their brains and the influence of public opinion.

Sources:

Introvert (artforintrovert.ru)
Sravni (sravni.ru)
Gazeta.Ru
RIA Novosti
4brain.ru
Neuroscience Institute (University of Chicago)
National Geographic
Cleveland Clinic
Medical News Today

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Blog