If it decides yes, your brain's motor cortex, a small area that exists on the outer part of your brain, calls for messages to be sent through your spinal cord and down your arm to the muscles that ...

Wilder Penfield, a pioneering brain surgeon, mapped the motor cortex using mild electric current. Wilder Penfield took the next exploratory voyage into the brain starting in the 1940s. While ...

These two hemispheres make up the cerebral cortex. This controls most of our senses, intelligence, personality, conscious thought and high-level functions, such as language and verbal memory.