Action-type mapping principles extend beyond evolutionarily conserved actions, even in people born without hands

Proceedings of the National Academy of Sciences, Volume 122, Issue 34, August 2025. <br/>SignificanceThe motor system is organized coarsely by body part; however, beyond M1 it also has a suborganization for hand actions. We tested whether this suborganization is sufficient to drive brain organization on its own, when typically developed …