An integrative understanding of comparative cognition: lessons from human brain evolution.
Level 5 - mechanism / opinion, no new human data
Narrative review synthesizing neuroanatomical, developmental, and genomic literature.
PubMed 32681799 · doi:10.1093/icb/icaa109
What was done
This review synthesized cross-species evidence spanning neuroanatomy, electrophysiology, developmental biology, and genomics to examine the evolution of human cognition relative to other primates.
What was found
The abstract reports no numerical data. It describes human cognitive specialization as involving neocortical expansion (particularly in higher-order regions like the prefrontal cortex), developmental heterochrony yielding increased neuron numbers, and positive selection in DNA sequences of gene regulatory regions.
Why it matters
It highlights that understanding complex cognitive evolution requires integrating anatomical comparisons with developmental timing and functional genomics across non-model organisms.
Limits
As a narrative review, it presents conceptual synthesis without original experimental data or systematic review methodology. The abstract provides no quantitative metrics, effect sizes, species counts, or formal risk-of-bias evaluations.
Cited by
- supports Humans, as Old World primates, possess an expanded prefrontal cortex that facilitates higher-order cognitive planning, reflection, and strategizing.