Fritsch, Gustav (1838-1927) & Hitzig, Edward (1838-1907)  Working in their own laboratory, two German physicians, Gustav Fritsch (1838-1927) and Edward Hitzig (1838-1907), discovered the motor cortex of the brain. Specifically, they found that electrical stimulation of particular areas resulted in muscle movement. If they stimulated a particular spot on the left side of a dog’s brain, its right leg would move.