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Updated: Aug 11, 2026

Interictal High Frequency Oscillations Detected with Simultaneous Magnetoencephalography and Electroencephalography as Biomarker of Pediatric Epilepsy
10:22

Interictal High Frequency Oscillations Detected with Simultaneous Magnetoencephalography and Electroencephalography as Biomarker of Pediatric Epilepsy

Published on: December 6, 2016

[Idiopathic partial epilepsy with occipital paroxysms]

R H Caraballo1, R O Cersósimo, C S Medina

  • 1Servicio de Neurología, Hospital Nacional de Pediatria J. P. Garraham, Buenos Aires, Argentina.

Revista De Neurologia
|July 1, 1997
PubMed

Insights

This study identified two distinct forms of idiopathic occipital epilepsy: the Gastaut type and the Panayiotopoulos type. The Panayiotopoulos type presents a more benign and frequent course in childhood epilepsy.

Area of Science:

  • Neurology
  • Epileptology

Background:

  • Partial benign epilepsy of childhood with occipital paroxysms (EPBI-O) is an idiopathic partial epilepsy.
  • Gastaut described EPBI-O in 1982; Panayiotopoulos described a different form in 1989.

Observation:

  • A prospective study analyzed 74 patients diagnosed with EPBI-O between 1990 and 1996.
  • Patients underwent clinical and electro-encephalic examinations over a 6-month to 6.5-year follow-up period.

Findings:

  • Two groups were identified: Group I (18 patients) with visual crises and post-ictal migraines, predominantly awake, and Group II (56 patients) with vomiting and oculo-encephalic version crises, predominantly during sleep.
  • EEG revealed occipital paroxysms in Group I and occipital spikes similar to benign epilepsy with Rolandic spikes (EPBI-R) in Group II.
  • Two patients exhibited associated crises of both EPBI-O types.

Implications:

  • The study confirms two variants of EPBI-O: the 'Gastaut' type and the 'Panayiotopoulos' type.
  • The 'Panayiotopoulos' type appears to have a more benign and frequent clinical course.
  • Differentiating these subtypes is crucial for understanding idiopathic occipital epilepsies.
Abstract

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