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Startle-induced seizure (ictal EEG)

Ictal EEG pattern characterized by marked attenuation of the amplitude and fast activity obscured by muscle artefacts. Clinically presenting as tonic axial seizure provoked by hand-clapping (indicated by arrow). (Courtesy of Drs. Daniel Tibussek and Bernhard Schmitt 2010.)

Associated Disorders

  • Anoxic encephalopathy
  • Cortical dysplasia
  • Developmental delay
  • Down syndrome
  • Infantile hemiplegia
  • Retardation
  • Schizencephaly