The polyphasic spike phenomenon.
D000293:Adolescent; D000367:Age Factors; D002547:Cerebral Palsy / Q000503:physiopathology*; D002648:Child; D002675:Child, Preschool; D004566:Electrodes; D004569:Electroencephalography; D004828:Epilepsies, Partial / Q000503:physiopathology; D004827:Epilepsy / Q000503:physiopathology*; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male