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<p>Humans possess a distinctive capacity for technical reasoning—the ability to infer and manipulate the causal structure of the physical world. Although this faculty is central to technological innovation, its neural substrates remain incompletely understood. Here, we show that grey matter volume in the left area PF, within the supramarginal gyrus of the inferior parietal lobule, may predict individual differences in technical reasoning in healthy adults (<i>N</i> = 75; 54 females; mean age = 20.92 ± 3.28 years). This association remains independent of demographic factors, personality traits, and total brain volume. In contrast, grey matter volume in right prefrontal regions, examined solely as control areas, correlates with broader cognitive functions, such as fluid intelligence and abstract reasoning, but not with technical reasoning. These findings suggest that the left area PF may provide essential computational resources for technical cognition. Located in a parietal area that is disproportionately expanded in humans, the left area PF may serve as a <i>technical hub</i>, functioning as part of a broader fronto-temporo-parietal network that supports the human ability to generate, refine, and pass on complex technologies.</p>

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Left area PF as a neural marker of technical reasoning

  • 期刊论文

  • 发表日期：

    2025年11月8日

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  • Giovanni Federico,
  • Ciro Rosario Ilardi,
  • Paola Marangolo,
  • Chloé Bryche,
  • Maximilien Metaireau,
  • Alexandre Bluet,
  • Mathieu Lesourd,
  • Yves Rossetti,
  • François Osiurak

摘要

Humans possess a distinctive capacity for technical reasoning—the ability to infer and manipulate the causal structure of the physical world. Although this faculty is central to technological innovation, its neural substrates remain incompletely understood. Here, we show that grey matter volume in the left area PF, within the supramarginal gyrus of the inferior parietal lobule, may predict individual differences in technical reasoning in healthy adults (N = 75; 54 females; mean age = 20.92 ± 3.28 years). This association remains independent of demographic factors, personality traits, and total brain volume. In contrast, grey matter volume in right prefrontal regions, examined solely as control areas, correlates with broader cognitive functions, such as fluid intelligence and abstract reasoning, but not with technical reasoning. These findings suggest that the left area PF may provide essential computational resources for technical cognition. Located in a parietal area that is disproportionately expanded in humans, the left area PF may serve as a technical hub, functioning as part of a broader fronto-temporo-parietal network that supports the human ability to generate, refine, and pass on complex technologies.