Figure 1: A fifty-seven-year-old female. Keppra (Levetiracetam) medication. Clinical data: loss of consciousness. Antecedent: operated for the month January 2012, left convexity meningioma. Operated for the month August 2011, intracranial brain frontotemporal left empyema. Routine EEG: normal background activity, abnormal spike-wave in left frontocentral which are broadcast sometimes in the right hemisphere activated by ILS (5 Hz) and by hyperventilation.