Use of scalp-sphenoidal EEG for seizure localization in temporal lobe epilepsy

A. M. Murro, Y. D. Park, D. W. King, B. B. Gallagher, J. R. Smith, W. Littleton

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

We determined the accuracy and sensitivity of scalp-sphenoidal EEG for seizure focus localization in 50 patients who became seizure-free or had rare seizures following temporal lobectomy. EEG localization was based on concordant interpretations of scalp-sphenoidal ictal EEG by three independent interpreters. All patients became seizure-free or had rare seizures following temporal lobectomy. Localization from EEG disagreed with the side of surgery in only 1 (2%) of 50 patients. We identified 3 distinct patient groups with a low, moderate, and high likelihood of having a focal ictal EEG pattern during a seizure. These groups comprised 31% (low likelihood), 44% (moderate likelihood), and 25% (high likelihood) of patients. A model based on these results suggests that with multiple ictal EEG recordings, accurate localization from scalp-sphenoidal EEG is possible in approximately up to 65–70% of patients with temporal lobe epilepsy.

Original languageEnglish (US)
Pages (from-to)216-219
Number of pages4
JournalJournal of Clinical Neurophysiology
Volume11
Issue number2
DOIs
StatePublished - Mar 1994

Keywords

  • Electro-encephalography
  • Epilepsy
  • Epilepsy surgery
  • Sphenoidal electrodes
  • Temporal lobe
  • Video/EEG monitoring

ASJC Scopus subject areas

  • Physiology
  • Neurology
  • Clinical Neurology
  • Physiology (medical)

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