Cortical areas associated to higher cognition drove primate brain evolution.
Level 5 - mechanism / opinion, no new human data
Level 5 by design analogy (computational and comparative evolutionary modeling without clinical endpoints).
PubMed 39827196 · doi:10.1038/s42003-025-07505-1
What was done
Developed statistical modeling tools to evaluate fine-scale evolutionary expansion across the cerebral cortex throughout primate lineages, including early primates, anthropoids, and *Homo*. The abstract does not specify the underlying anatomical datasets, imaging modalities, or exact species included.
What was found
The abstract reports evolutionary trajectories without specific numerical values or statistical metrics: - Rapid expansion of the prefrontal cortex occurred early in primate evolution. - In anthropoids, fast-expanding regions broadened to include the posterior parietal cortex. - In the genus *Homo*, subsequent expansion localized to the medial temporal lobe and the posteroinferior parietal cortex. - The expanding areas correspond to functional networks associated with higher-order cognitive capabilities, including theory of mind.
Why it matters
This work maps the chronological sequence of cortical expansion across primate evolution, linking anatomical changes directly to networks supporting complex social and cognitive processing.
Limits
The abstract reports no quantitative values, sample sizes, or species counts. Results rely on statistical evolutionary reconstructions, which inherently depend on model assumptions and comparative anatomical registrations across divergent species.
Cited by
- supports Humans evolved an expanded prefrontal cortex relative to other primates, facilitating higher-order thinking, planning, reflection, and strategic planning.