In 1949 Canadian neurosurgeon Wilder Penfield developed a surgical procedure to relieve epilepsy. His initial procedure was to electrically probe the surface of the patient’s cortex to find the problem area. During such investigations, he discovered that stimulation of Brodmann’s area 4 readily elicited localised muscle twitches.
Matty Smith, over at BFG 9000 did this one. Hated to love it, but I do. Good job Matty.