Study Challenges View of Intelligence Tied to Specific Brain Regions

Notre Dame researchers suggest intelligence is about how brain networks work together, not just brain size.

Mar. 13, 2026 at 3:28pm

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A groundbreaking new study from the University of Notre Dame is challenging the long-held view that intelligence is tied to specific brain regions. Researchers suggest intelligence isn't about specialized brain areas, but rather how those regions work together in coordinated networks. The study analyzed brain imaging and cognitive performance data from nearly 900 adults, revealing that intelligence hinges on the brain's ability to effectively integrate, flexibly adapt, and efficiently communicate across different networks.

Why it matters

This research offers new perspectives on how intelligence evolves throughout life and could lead to interventions to support cognitive health. It also has implications for the field of artificial intelligence, as current AI systems often struggle with adaptability compared to the human brain's flexible network architecture.

The details

The Notre Dame team, led by neuroscientist Aron Barbey, took a different approach from traditional neuroscience studies that have focused on isolating specific cognitive functions. Instead, they investigated how these functions interact within the brain. The study revealed that intelligence isn't tied to a single brain area, but rather hinges on the brain's ability to coordinate its networks effectively through three core properties: integration, flexibility, and efficient communication.

  • The study was published in Nature Communications in 2026.

The players

Aron Barbey

A neuroscientist at the University of Notre Dame who led the research team that conducted the groundbreaking study.

University of Notre Dame

The institution where the research team that conducted the study is based.

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What they’re saying

“Neuroscience has been extremely successful at explaining what particular networks do, but much less successful at explaining how a single, coherent mind emerges from their interaction.”

— Aron Barbey, Neuroscientist (Nature Communications)

“Many systems of AI are very performant in precise tasks, but struggle still to generalize their knowledge. Human intelligence distinguishes itself precisely by this flexibility.”

— Aron Barbey, Neuroscientist (Nature Communications)

What’s next

The findings from this study could lead to the development of new interventions to support cognitive health and improve the adaptability of artificial intelligence systems.

The takeaway

This research challenges the long-held view that intelligence is tied to specific brain regions, suggesting instead that it emerges from the brain's ability to effectively coordinate its complex network of interconnected regions. This holistic understanding of the neural foundations of intelligence could have far-reaching implications for neuroscience, cognitive health, and the future of artificial intelligence.