You have to read @kelseytea.bsky.social excellent work on dexterity in deer mice evolved in forest vs prairie habitats. A powerful example of cross species comparisons to study principles of motor control ✅
Abhilasha Joshi, PhD
🧠🌟🐭 Excited to share some of my postdoc work on the evolution of dexterity!
We compared deer mice evolved in forest vs prairie habitats. We found that forest mice have:
(1) more corticospinal neurons (CSNs)
(2) better hand dexterity
(3) more dexterous climbing, which is linked to CSN number🧵
Video
Kelsey Tyssowski
Evolutionary expansion of the corticospinal system is linked to dexterity in Peromyscus mice https://www.biorxiv.org/content/10.1101/2025.10.16.682851v1
