Semaine du cerveau 2026

Semaine du cerveau 2026

Week of the brain 2026

🎙 Réjouisciences - ULiège 👥 710 📅 August 19, 2026 ⏱ 226 min 👁 116 📄 science communication 🧭 2026-10-08
Available in: English (current) Français

Keywords

neuromythesfonctions exécutivesadolescenceapprentissagecerveau

Summary

This video is a recording of a public event held during the 2026 International Brain Week, organised by Réjouisciences and REALISM at the University of Liège. It features two main segments: a lecture by Stéphanie Péters on neuromyths and a commented dissection of a human brain by Rachelle Franzen. The lecture begins with an interactive quiz in which the audience votes on ten common beliefs about the brain, such as ‘we only use 10% of our brain’ or ‘some people are left-brained’. Most of these statements are shown to be false or partially false, except the claim that male brains are slightly heavier than female brains, which is true on average but has no bearing on intelligence. Péters explains that neuromyths often stem from a kernel of scientific truth that has been exaggerated or generalised far beyond its original context, as illustrated by the Mozart effect. She then focuses on two myths: the ‘maths bump’ and multitasking. The ‘maths bump’ is traced back to 19th-century phrenology and the pseudoscientific observations of Dr Gall, who believed that skull shape revealed cognitive abilities. Modern neuroscience shows that mathematics involves multiple brain regions, particularly executive functions such as working memory, mental flexibility and inhibition. These functions are crucial for academic and professional success and mature until about age 25, which explains why adolescents may struggle with tasks requiring them. The lecture also touches on genetic and environmental influences on brain development, including sleep, stress, nutrition and socioeconomic factors. The second part of the video is a live dissection of a human brain, where Rachelle Franzen explains the anatomy of the encephalon, including the cortex, brainstem and cerebellum, and shows internal structures through sections. The session ends with a Q&A. The overall tone is educational and critical, aiming to equip the audience with tools to debunk neuromyths.

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Critical Evaluation

Value of the Information & Strength of the Argument

The video offers substantial informational value by systematically addressing prevalent neuromyths and providing clear, evidence-based explanations. The argumentation is structured and pedagogical: the speaker starts with an interactive quiz to engage the audience, then deconstructs each myth by tracing its origins and contrasting it with current scientific understanding. For instance, the ‘Mozart effect’ is explained as a misinterpretation of a single study on memory tasks in adults, which was then generalised to intelligence and even prenatal development. The ‘maths bump’ is debunked by showing that mathematics relies on distributed brain networks, especially executive functions, rather than a single brain area. The discussion of executive functions is particularly strong, linking them to academic achievement, health and addiction, and explaining their protracted maturation during adolescence. The argument is supported by references to genetic and environmental factors, including socioeconomic status, sleep, stress and nutrition. The speaker also emphasises the importance of teacher feedback and the dangers of labelling students. The reasoning is logical and avoids oversimplification, acknowledging that neuromyths often contain a grain of truth. However, the lecture remains at a general level, without delving into specific studies or data, which limits its depth for an expert audience. The second part, the brain dissection, adds anatomical value by visually demonstrating brain structures, though it is more descriptive than argumentative. Overall, the argumentation is solid, balanced and well-suited for a general audience seeking to understand how neuroscience can inform education.

Scientific Rigor, Source Quality, Title Accuracy

Scientific rigour is high, as the speaker is a university lecturer specialising in the circulation of neuroscientific knowledge and the content aligns with established cognitive neuroscience. Sources are not formally cited in the transcript, but the speaker refers to specific historical figures (Dr Gall) and general research findings (studies on executive functions, socioeconomic influences). The absence of explicit citations is a limitation, but the claims are presented with appropriate caveats, such as the distinction between correlation and causation. The title ‘Semaine du cerveau 2026’ accurately reflects the event, which is part of the International Brain Week, and the content matches the announced programme: a lecture on neuromyths and a commented dissection. There is no misleading clickbait; the title is descriptive and the video delivers exactly what it promises. The presence of a sponsor segment is not mentioned in the transcript, so no advertising sequence was identified. The Q&A session at the end further reinforces the educational intent. Overall, the rigour and source quality are commendable for a public outreach event, though the lack of direct references slightly reduces the score.

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Title / Content Match

The title 'Brain Week 2026' accurately reflects the event, which is part of the International Brain Week. The content matches the announced programme: a lecture on neuromyths and a commented dissection of a human brain.

Quality & Reliability

8/10

The content is delivered by an academic from the University of Liège (Faculty of Psychology, Speech Therapy and Educational Sciences) specialising in the circulation of neuroscientific knowledge. The claims about neuromyths, executive functions, adolescent brain maturation and the history of phrenology are consistent with mainstream cognitive neuroscience. However, the presentation is a public lecture rather than a peer-reviewed study, and specific empirical references are mentioned only in general terms (e.g., 'a researcher', 'studies show'), without full citations. No misleading or pseudoscientific claims were detected; the speaker explicitly distinguishes scientific facts from their distorted popularisations.

Key Moments

Contribution & Novelties

The video’s main contribution is its accessible and critical deconstruction of neuromyths, particularly the ‘maths bump’ and multitasking, within a public education context. It bridges cognitive neuroscience and pedagogy by explaining how executive functions develop and why adolescents may struggle, offering a nuanced view that avoids labelling. The live brain dissection adds a rare visual and anatomical dimension, making the abstract concepts tangible. The event also highlights the role of socioeconomic and environmental factors in brain development, an often-overlooked aspect in popular science. For those interested in further exploration, the following resources are suggested:

Pour aller plus loin :

  • Neuromyths — Wikipedia article providing an overview of common neuromyths and their origins.
  • Executive functions — Wikipedia article detailing the cognitive processes involved in self-regulation and goal-directed behaviour.
  • Phrenology — Wikipedia article on the pseudoscientific theory that gave rise to the ‘maths bump’ myth.
  • Adolescent brain development — Wikipedia article covering the maturation of the brain during adolescence.
  • Mozart effect — Wikipedia article explaining the origin and debunking of the Mozart effect.

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Radar Profile

The radar profile shows a strong emphasis on information quality and reliability, with moderate scores for quantity and technical depth. This reflects the video's focus on accurate, evidence-based debunking of neuromyths rather than presenting new primary research. The technical level is appropriate for a general audience, balancing accessibility with scientific integrity.

Reliability 8/10