Scientists discover brain area that controls ability to correct movement after being hit or bumped.

http://www.healthcanal.com/brain-nerves/24136-Scientists-discover-how-brain-corrects-bumps-body.html

The fact that humans rapidly correct for any disturbance in motion demonstrates the brain understands the physics of the limb – scientists just didn’t know what part of the brain supported this feedback response – until now. Researchers have discovered that the pathway through the primary motor cortex provides this knowledge of the physics of the limb… implications for stroke patients.