 In recent years stereotactic anterior cingulotomies have been performed by the psychosurgical unit at Ninewells Hospital, Dundee, Scotland.In 1949 Knight at Runwell Hospital started performing the operation of orbital undercutting (called orbital leucotomy in Britain) devised by American surgeon William Beecher Scoville, in which the lower quadrants of the frontal lobes were cut via holes in the forehead.Knight later modified Scoville's operation to restrict the cut to the lower medial quadrants.