“…Electrical stimulation has been important in the history of neuroscience. It provided the first evidence of cortico-spinal control with the work of Fristch and Hitzig, Ferrier, Sherrington and many others (reviewed in Ferrier, 1874 ; Hitzig, 1900 ; Sherrington and Grünbaum, 1901 ) and established functional maps in the human brain with Penfield and collaborators ( Penfield and Boldrey, 1937 ).…”