Operculo-Insular Epilepsy: Scalp and Intracranial Electroencephalographic Findings

Journal of Clinical Neurophysiology : Official Publication of the American Electroencephalographic Society
Ariel LevyDang Khoa Nguyen

Abstract

Operculo-insular seizures are heterogeneous and may resemble seizures originating from the temporal, frontal, or parietal lobe. Although surface and invasive EEG recordings are often necessary to detect operculo-insular seizures, electrophysiological features of operculo-insular epilepsies remain poorly characterized. This study describes the EEG findings of patients with operculo-insular epilepsy. We reviewed electrophysiological data of all patients (n = 9) with operculo-insular seizures revealed by intracranial EEG and for whom operculo-insular epilepsy was confirmed by good seizure outcome after resective or radiosurgery at our center between 2005 and 2013. Patients were divided according to whether their seizure focus involved the anterior (group 1; n = 4) or posterior (group 2; n = 5) portion of the insula. Interictal scalp EEG was lateralizing and showed distinct topographical spike patterns between groups: frontal and temporal in group 1, temporal in group 2. Intracranial recordings showed abundant spikes limited to the operculo-insular region or involving distant areas in the frontal/temporal (group 1) and temporal/parietal lobes (group 2). Ictal intracranial EEG revealed discharges limited to the insula or simultaneou...Continue Reading

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Citations

Feb 2, 2018·Clinical Nuclear Medicine·Phillip FeiDang Khoa Nguyen
Sep 13, 2019·Postgraduate Medicine·Maria StefanatouMichael Koutroumanidis
Mar 7, 2019·Epilepsy Currents·Barbara C JobstFred Lado
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Mar 24, 2020·Seizure : the Journal of the British Epilepsy Association·Pablo KappenFriederike Moeller
Jun 1, 2021·Epilepsy & Behavior : E&B·Huan-Guang LiuWen-Han Hu
Aug 28, 2021·Brain Sciences·Sami ObaidMaxime Descoteaux

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