MRI scans of seals and sea lions reveal a nerve pathway that bypasses the midbrain and connects vocal muscles directly to cortical motor regions, giving pinnipeds voluntary control over vocalization. Researchers hypothesize this evolved as a side effect of adaptations for voluntary breath control during deep dives, linking respiratory control to the neural capacity for learned vocal flexibility.
— If vocal learning can arise from respiratory/dive adaptations, it reframes hypotheses about how and why language‑capable neural circuitry evolves and changes where scientists look for language precursors across species.
Devin Reese
2026.03.20
100% relevant
Science paper reported via Nautilus: MRI mapping of pinniped and coyote brains showing a midbrain bypass in seals/sea lions, and the authors’ hypothesis tying it to voluntary breath control for diving (quote and press release from Peter Cook).
← Back to All Ideas