A map of complex movements in motor cortex of primates

How does the primate cerebral cortex control movement? Over the past century, three interrelated hypotheses have shaped the research. They are now thought to be at least partly incorrect. They are:

1 Primary motor cortex contains a detailed topographic map of the body. The foot is represented at the top of the hemisphere, the mouth is represented at the bottom, and other body parts are systematically arranged in between.