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Peri-ictal yawning: A potential lateralizing sign in temporal lobe epilepsy.
Epilepsia Open
November 2024
Department of Neurology, First Hospital of Shanxi Medical University, Taiyuan, Shanxi, China.
Objective: The primary objective of this retrospective analysis was to evaluate the incidence and lateralization value of peri-ictal yawning (PY) in people with temporal lobe epilepsy (TLE). PY has only occasionally been reported as a manifestation of focal epilepsy. We aimed to determine whether PY could serve as an indicator to help lateralize seizure onset during epileptic seizures.
View Article and Find Full Text PDFHow fast does the brain recover after an epileptic seizure?
Ann Clin Transl Neurol
June 2024
Epileptology and Cerebral Rhythmology, APHM, Timone Hospital, Marseille, France.
The postictal state, an abnormal cerebral condition following a seizure until the return to the interictal baseline, is frequently overlooked, despite often exceeding ictal duration and significantly impacting patients' lives. This study analyzes stereo-EEG (SEEG) signal dynamics using permutation entropy to quantify recovery time (postictal alteration time - PAT) in focal epilepsy and its clinical correlations. The average PAT was 4.
View Article and Find Full Text PDFMeasurable transitions during seizures in intracranial EEG: A stereoelectroencephalography and SPECT study.
Clin Neurophysiol
May 2024
Neurological Institute, Epilepsy Center, Cleveland Clinic, Cleveland, OH, USA.
Objective: Ictal Single Photon Emission Computed Tomography (SPECT) and stereo-electroencephalography (SEEG) are diagnostic techniques used for the management of patients with drug-resistant focal epilepsies. While hyperperfusion patterns in ictal SPECT studies reveal seizure onset and propagation pathways, the role of ictal hypoperfusion remains poorly understood. The goal of this study was to systematically characterize the spatio-temporal information flow dynamics between differently perfused brain regions using stereo-EEG recordings.
View Article and Find Full Text PDFSpontaneous fast-ultradian dynamics of polymorphic interictal events in drug-resistant focal epilepsy.
Epilepsia
August 2023
Institut de Neurosciences des Systèmes (INS, UMR1106), Aix Marseille Université, INSERM, Marseille, France.
Objective: We studied the rate dynamics of interictal events occurring over fast-ultradian time scales, as commonly examined in clinics to guide surgical planning in epilepsy.
Methods: Stereo-electroencephalography (SEEG) traces of 35 patients with good surgical outcome (Engel I) were analyzed. For this we developed a general data mining method aimed at clustering the plethora of transient waveform shapes including interictal epileptiform discharges (IEDs) and assessed the temporal fluctuations in the capability of mapping the epileptogenic zone (EZ) of each type of event.
How May a Brief Seizure Lead to Prolonged Epileptic Amnesia?
Brain Topogr
March 2023
Epileptology and Cerebral Rhythmology, Timone Hospital, APHM, Marseille, France.
Pure amnestic seizures are defined as self-limited episodes with isolated, anterograde memory loss and have been attributed to bilateral dysfunction of mesial temporal structures. This type of seizure can occur in patients with different forms of temporal lobe epilepsy and has been more recently associated with a late-onset epileptic syndrome, called transient epileptic amnesia (TEA). The mechanisms of such prolonged manifestations are not well known and notably its ictal or post-ictal origin remains poorly understood.
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