Operant conditioning of a profoundly retarded individual reinforced via a stomach fistula.
D000293:Adolescent; D001132:Arm; D003216:Conditioning, Operant; D005260:Female; D005402:Fistula; D006801:Humans; D008607:Intellectual Disability; D009043:Motor Activity; D012055:Reinforcement Schedule; D012201:Reward; D013270:Stomach / Q000502:physiology* / Q000601:surgery