The significance of periodic lateralized epileptiform discharges in EEG: An electrographic, clinical and pathological study☆,☆☆
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Cited by (374)
Pitfalls in scalp EEG: Current obstacles and future directions
2023, Epilepsy and BehaviorLateralized Periodic Discharges: Which patterns are interictal, ictal, or peri-ictal?
2021, Clinical NeurophysiologyElectrographic seizures and ictal–interictal continuum (IIC) patterns in critically ill patients
2020, Epilepsy and BehaviorCitation Excerpt :Along with a higher than expected incidence of electrographic seizures was the reemergence of several previously described EEG patterns. These patterns including periodic lateralized epileptiform discharges (PLEDs) [10,11], generalized periodic epileptiform discharges (GPEDs), and frontal intermittent rhythmic delta activity (FIRDA) [12] took on a new importance with their increased prevalence and the growing speculation regarding their pathological significance. Drs. Chong and Hirsch proposed a conceptual framework for spanning the clearly interictal to the definitively ictal known as the IIC sometimes termed ictal–interictal injury continuum [13].
Periodic focal epileptiform discharges
2019, Clinical NeurophysiologyCitation Excerpt :They were initially described more than 6 decades ago (Chatrian et al., 1964) though were recently renamed lateralized periodic discharges (LPDs) by the American Clinical Neurophysiology Society to de-emphasize epileptiform properties that were felt to be non-essential for clinical importance. PLEDs have been typically associated with critically ill patients sustaining an acute destructive structural brain lesion such as stroke (Herlopian et al., 2018; Afra et al., 2008; Gurer et al., 2004; Chatrian et al., 1964; Garcia-Morales et al., 2002) characteristically associated with impaired consciousness and seizures acting as a harbinger of poor neurological outcome (Herlopian et al., 2018). Distinguishing PLEDs as an interictal or ictal phenomenon is a common treatment challenge for clinicians (Kalamangalam and Slater, 2015; Chong and Hirsch, 2005).
Sharp Transient: epileptiform or normal variant?
2018, Neurophysiologie-Labor
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This work was partially supported by research grants, NB3514, NB2933 and NB5231 from the National Institutes for Neurological Diseases and Blindness, U.S. Public Health Service; Initiative 171 Section, Research Committee of the Graduate School, University of Washington and University of Washington Institutional Cancer Grant.
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Read, in part, at the meeting of the American Electroencephalographic Society, San Francisco, California, October 7–9, 1963.
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Research fellow of the National Multiple Sclerosis Society.