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- Title
Interictal Rhythmic Midline Theta Rhythm is Common in Frontal Lobe Epilepsy But Not Specific to Any Subcompartment.
- Authors
BAYSAL KIRAC, Leyla; REMI, Jan; HARTL, Elisabeth; LOESCH, Anna Mira; VOLLMAR, Christian; NOACHTAR, Soheyl
- Abstract
Purpose: The objective was to investigate whether rhythmic midline theta (RMT) is more common in mesial frontal lobe epilepsy (FLE) than in other FLEs. Methods: We reviewed our data base and included 19 patients with medically refractory FLE who underwent invasive evaluation for epilepsy surgery in the study. In all patients noninvasive EEG-video recordings have been performed prior to the invasive studies. Interictal RMT due to drowsiness was excluded. Results: RMT was observed in surface EEGs of 13 of 19 (68 %) FLE patients. The rate of RMT was as common in mesial frontal (6 of 8 patients; 75 %), orbitofrontal (4 of 5 patients, 80 %) and dorsolateral frontal (2 of 3 patients; 67%) seizure onset (p=0.9). RMT was observed in surface EEGs of 4 of 5 (80 %) patients who showed majority of the interictal epileptiform discharges (IEDs) in the temporal lobe region. Conclusions: Interictal RMT is common in patients with FLE and does not seem to have an association with a subcompartment of the frontal lobe. RMT is particularly valuable as a marker for frontal lobe epileptic dysfunction in patients whose IEDs dominate outside the frontal lobe.
- Subjects
FRONTAL lobe epilepsy; EPILEPSY surgery; TREATMENT of epilepsy; FRONTAL lobe diseases; TEMPORAL lobe epilepsy; PATIENTS
- Publication
Journal of Neurological Sciences, 2016, Vol 33, Issue 2, p207
- ISSN
1300-1817
- Publication type
Article