Abnormal or Seizure Pattern?

Abnormal_Pattern

Noachter 1999 Seizure Pattern, EEG Phenomenon consisting of repetitive EEG discharges with relatively abrupt onset and termination and characteristic pattern of evolution lasting at least several seconds. These EEG patterns are seen during epileptic seizures. Frequent interictal epileptiform discharges are a usually not associated with clinical seizures and thus should be differentiated from electroencephalographic seizure patterns. The component waves or complexes vary in form, frequency, and topography. They are generally rhythmic and frequently display increasing amplitude and decreasing frequency during the same episode. When focal in onset, they tend to spread subsequently to other areas. Comment: EEG seizure patterns unaccompanied by clinical epileptic manifestations detected by the EEG technician should be referred to as "subclinical" .