Interictal rhythmic midline theta rhythm is common in frontal lobe epilepsy but not specific to any subcompartment [İnteriktal Ritmik Orta Hat Teta Ritmi Frontal Lob Epilepsisinde Sıktır,Ancak Herhangi Bir Alt Kompartmana Spesifik Değildir]

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. © 2016,ege university press. all rights reserved.