Scientists uncover the brain’s hidden learning blocks

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2025-12-12 16:57:02 -

Princeton researchers discovered that brains use modular "cognitive blocks" like Lego pieces, reassembling them for new tasks - which explains why we learn quickly while AI models struggle with catastrophic forgetting. This biological insight could be key to building more adaptable AI systems that don't lose old skills when learning new ones

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Princeton researchers found that the brain excels at learning because it reuses modular “cognitive blocks” across many tasks. Monkeys switching between visual categorization challenges revealed that the prefrontal cortex assembles these blocks like Legos to create new behaviors. This flexibility explains why humans learn quickly while AI models often forget old skills. The insights may help build better AI and new clinical treatments for impaired cognitive adaptability.

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