Electroencephalogram of Age-Dependent Epileptic Encephalopathies in Infancy and Early Childhood

Figure 3

High amplitude poorly organized slow background with multifocal epileptiform discharges and intermittent generalized electrodecrement, consistent with hypsarrhythmia at age 4 months in a child with early myoclonic encephalopathy due to nonketotic hyperglycinemia.