title: Developmental characteristics of normal and mentally retarded children's EEGs.
mesh_terms: D000293:Adolescent; D000367:Age Factors; D002648:Child; D002657:Child Development; D002675:Child, Preschool; D003430:Cross-Sectional Studies; D004569:Electroencephalography; D006801:Humans; D008607:Intellectual Disability / Q000503:physiopathology*; D008137:Longitudinal Studies