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EEG in Epilepsy: Current Perspectives

Published online by Cambridge University Press:  02 December 2014

M. Sundaram ,
R.M. Sadler ,
G.B. Young  and
N. Pillay
M. Sundaram
Affiliation:
From the University of Mississippi, Jackson, MS USA
R.M. Sadler
Affiliation:
Dalhousie University, Halifax, NS Canada
G.B. Young
Affiliation:
University of Western Ontario, ON Canada
N. Pillay
Affiliation:
University of Calgary, AB Canada
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Abstract

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The electroencephalogram (EEG) plays an important diagnostic role in epilepsy and provides supporting evidence of a seizure disorder as well as assisting with classification of seizures and epilepsy syndromes. Emerging evidence suggests that the EEG may also provide useful prognostic information regarding seizure recurrence after a single unprovoked attack and following antiepileptic drug withdrawal. Continuous EEG video telemetry monitoring has an established role in the diagnosis of non-epileptic pseudo-seizures and in localizing the seizure focus for epilepsy surgery. Newer tools such as EEG mapping and magneto-encephalogram, although still investigational, appear potentially useful for defining the seizure focus in epilepsy. This review examines the traditional concepts of clinical EEG in the light of newly available data.

Résumé

RÉSUMÉ

L’électroencéphalogramme (ÉEG) joue un rôle diagnostique important dans l’épilepsie et fournit des données étayant le diagnostic d’épilepsie et aidant à sa classification. Des données récentes suggèrent que l’ÉEG peut aussi fournir des informations utiles pour determiner le pronostic quant à récurrence des crises après un épisode unique non provoqué et après le retrait de la medication antiépileptique. Le monitorage vidéo télémétrique continu de l’ÉEG a un rôle établi dans le diagnostic des pseudocrises non épileptiques et dans la localisation du foyer épileptogène en vue d’une chirurgie. Les nouveaux outils tells que la cartographie par ÉEG et le magnéto-encéphalogramme, bien qu’ils soient encore au stade expérimental, semblent potentiellement utiles pour identifier le foyer épileptogène dans l’épilepsie. Cet article de revue examine les concepts traditionnels de l’ÉEG en clinique à la lumière de données nouvelles.

Type
Review Article
Information
Canadian Journal of Neurological Sciences , Volume 26 , Issue 4 , November 1999 , pp. 255 - 262
Copyright
Copyright © The Canadian Journal of Neurological 1999

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