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 language | English (US) |
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Pages (from-to) | 216-219 |
Number of pages | 4 |
Journal | Journal of Clinical Neurophysiology |
Volume | 11 |
Issue number | 2 |
DOIs | |
State | Published - 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)