Which condition shows the following characteristic EEG finding?

(D) Sub-acute sclerosing panencephalitis (SSPE) [Adams Neuroloqv10-33; Harrison19-900. 12981# SSPE EEG: Periodic discharges at 4 sec interval. Maximum at fronto-central areas. Giant slow waves mixed with several sharp waves.> EEG showing periodic bursts of slow wave complexes occurring bilaterally at interval of 4 s and lasting for a period of around 1 s.# Sub-acute sclerosing panencephalitis (SSPE): is a fatal disease of the central nervous system (CNS) related to persistent measles virus infection, usually seen in children and young adolescents.> Typical neurological manifestations include progressive intellectual deterioration; behavioral changes; myoclonic jerks; and other type of seizures, pyramidal, and extra-pyramidal features.> This report presents a case of SSPE atypical features, occipital lobe seizures, and extensive unilateral hemispheric lesions on neuroimaging.> Electroencephalogram (EEG) showed paroxysmal bursts of bilateral slow wave complexes every 3-5 s occurring synchronously with the myoclonic jerks.