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Evolution of the motor cortex microstructure and its lateralization: a comparative study of chimpanzees and humans

M. Chauvel E. Kirilina I. Lipp F. Buettner C. Jäger K. Pine L. Edwards S. Ebel K. Kopp S. Helbling P. McColgan D. Rose T. Gräßle R. McElreath D. Chaimow C. Crockford R. Wittig N. Weiskopf
Aug 2026 · bioRxiv · 0 citations
Biology

TL;DR

Using high-resolution qMRI, motor cortex subdivisions controlling the leg, hand, and face in humans and chimpanzees are compared and consistently higher myelin and iron content in the hand-knob in both species are found, suggesting an evolutionarily conserved role.

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