Localization of temporal lobe seizures with quantitative EEG

Anthony M. Murro, Yong D. Park, Don W. King, Brian B. Gallagher, Joseph R. Smith, Kimford J. Meador, Wanda Littelton

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


In this study, we describe a quantitative EEG method for localization of seizure onset in 29 patients with temporal lobe epilepsy. We used right-left differences in relative power and a logistic regression to predict the side of seizure onset. The optimum bipolar channels were T4-T6/T3-T5 and the optimum frequency band was 4-10.5 Hz. Using a threshold probability of 0.75 for classification, the best quantitative EEG method classified 23 patients (79%) correctly, 2 patients (7%) incorrectly, and 4 patients (14%) as undetermined localization. In comparison, 3 electroencephalographers visually interpreted these same EEGs and classified 20-25 patients (69-86%) correctly, 1 patient (3%) incorrectly and 3-8 patients (10-28%) as undetermined localization. In the 8 patients classified as undetermined localization by at least one interpreter, the quantitative EEG method classified 5 patients correctly, 1 patient incorrectly and 2 patients as undetermined localization. These results suggest that quantitative EEG might improve the reliability of ictal EEG localization and potentially reduce the need for invasive intracranial EEG monitoring.

Original languageEnglish (US)
Pages (from-to)88-93
Number of pages6
JournalElectroencephalography and Clinical Neurophysiology
Issue number2
StatePublished - Feb 1993


  • Discriminant analysis
  • Electroencephalography
  • Epilepsy
  • Fourier analysis
  • Seizure
  • Temporal lobe

ASJC Scopus subject areas

  • Neuroscience(all)
  • Clinical Neurology


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