نتایج جستجو برای: epileptiform discharges

تعداد نتایج: 15266  

Journal: :Journal of neurology, neurosurgery, and psychiatry 1986
J Lim P Yagnik P Schraeder S Wheeler

Three patients with EEG documented ictal catatonia, a nonconvulsive status epilepticus, who responded dramatically to intravenous phenytoin are described. The EEG showed continuous bilateral pseudoperiodic sharp waves and spike discharges in one patient, spike and wave complexes were seen prominently in the right fronto-central region in another, and the EEG of the third patient showed periodic...

Journal: :Journal of neurophysiology 1998
R Demir L B Haberly M B Jackson

The piriform cortex is a temporal lobe structure with a very high seizure susceptibility. To investigate the spatiotemporal characteristics of epileptiform activity, slices of piriform cortex were examined by imaging electrical activity with a voltage-sensitive fluorescent dye. Discharge activity was studied for different sites of stimulation and different planes of slicing along the anterior-p...

2011
Gaelle Bettus Jean-Philippe Ranjeva Fabrice Wendling Christian G. Bénar Sylviane Confort-Gouny Jean Régis Patrick Chauvel Patrick J. Cozzone Louis Lemieux Fabrice Bartolomei Maxime Guye

In this study, we aimed to demonstrate whether spontaneous fluctuations in the blood oxygen level dependent (BOLD) signal derived from resting state functional magnetic resonance imaging (fMRI) reflect spontaneous neuronal activity in pathological brain regions as well as in regions spared by epileptiform discharges. This is a crucial issue as coherent fluctuations of fMRI signals between remot...

2010
Agustin Liotta Gürsel Çalışkan Rizwan ul Haq Jan O. Hollnagel Uwe Heinemann Christoph J. Behrens

Partial disinhibition is required for transition of stimulus-induced sharp wave1 ripple complexes into recurrent epileptiform discharges 2 in rat hippocampal slices 3 Agustin Liotta#, Gürsel Çalışkan#, Rizwan ul Haq, Jan O. Hollnagel , Anton 4 Rösler, Uwe Heinemann 2 and Christoph J. Behrens 5 6 Institute of Neurophysiology, Institute for Physiology and 7 NeuroCure Research Center, Charité Univ...

Journal: :Epilepsia 2012
Wesley T Kerr Ariana Anderson Edward P Lau Andrew Y Cho Hongjing Xia Jennifer Bramen Pamela K Douglas Eric S Braun John M Stern Mark S Cohen

Interictal electroencephalography (EEG) has clinically meaningful limitations in its sensitivity and specificity in the diagnosis of epilepsy because of its dependence on the occurrence of epileptiform discharges. We have developed a computer-aided diagnostic (CAD) tool that operates on the absolute spectral energy of the routine EEG and has both substantially higher sensitivity and negative pr...

Journal: :Seizure 2004
Ahmad Beydoun Chris Vanderzant Ekrem Kutluay Ivo Drury

Thrombotic thrombocytopenic purpura (TTP) is an ischemic vasculopathy frequently associated with neurological dysfunction including seizures. However, status epilepticus (SE) has rarely been reported in this condition. We report on a 70-year-old woman with fulminant TTP who developed convulsive SE despite high therapeutic serum levels of phenytoin and phenobarbital. Her electroencephalogram (EE...

Journal: :Epilepsia 2002
Junichi Yamamoto Akio Ikeda Takeshi Satow Kazuhide Takeshita Motohiro Takayama Masao Matsuhashi Riki Matsumoto Shinji Ohara Nobuhiro Mikuni Jun Takahashi Susumu Miyamoto Waro Taki Nobuo Hashimoto John C Rothwell Hiroshi Shibasaki

PURPOSE This study was conducted to investigate the effect of low-frequency electric cortical stimulation on epileptic focus in humans. METHODS We stimulated the epileptic focus in a patient with medically intractable mesial temporal lobe epilepsy (MTLE) by means of subdural electrodes and evaluated the change in the number of interictal epileptiform discharges. We used biphasic electric curr...

Journal: :Journal of clinical neurophysiology : official publication of the American Electroencephalographic Society 2006
Peter W Kaplan

SUMMARY Gastaut noted that there are as many forms of status epilepticus (SE) as there are seizure types. The pleomorphic EEG patterns reflect this wide variety of clinical types. The different electroclinical types of status epilepticus share EEG characteristics including rhythmic activity, epileptiform discharges, and often a waxing and waning evolution. Gray zones of interpretation exist in ...

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