Brain mapping study suggests motor regions for the hand also connect to the entire body

Investigators report that they have used microelectrode arrays implanted in human brains to map out motor functions down to the level of the single nerve cell. The study revealed that an area believed to control only one body part actually operates across a wide range of motor functions. It also demonstrated how different neurons coordinate with each other. https://www.sciencedaily.com/releases/2020/03/200326144409.htm