Professor kim is studying how the brain is involved in voluntary movements. professor kim stimulates the "Motor Cortex" of his participants' brain with mild electrical signals.
The motor cortex is the locale of the cerebral cortex associated with the arranging, control, and execution of deliberate developments. Classically the motor cortex is a zone of the frontal projection situated in the back precentral gyrus quickly foremost to the focal sulcus.
The primary motor cortex on the left half of the brain controls development of the correct side of the body, and the other way around, the right motor cortex controls development of the left half of the body.