prefrontal lobotomy

prefrontal lobotomy (http://definr.com/prefrontal lobotomy)

     n : surgical interruption of nerve tracts to and from the
         frontal lobe of the brain; often results in marked
         cognitive and personality changes [syn: lobotomy, leukotomy,
          leucotomy, prefrontal leukotomy, {prefrontal
         leucotomy}]