The visually evoked potential in twins.
D000293:Adolescent; D002540:Cerebral Cortex / Q000502:physiology*; D002648:Child; D003201:Computers; D004558:Electric Stimulation; D004569:Electroencephalography; D005260:Female; D006801:Humans; D008027:Light; D011247:Pregnancy; D012018:Reflex; D014427:Twins