Abstract
EEG misinterpretation is a major contributor to epilepsy misdiagnosis.1,2 To help improve interictal epileptiform discharge (IED) identification, the International Federation of Clinical Neurophysiology (IFCN) proposed a set of 6 operational criteria3 (Table 1) that was subsequently validated with Class III evidence demonstrating IFCN criteria in sensor space (visual analysis) and analysis in source space (spatial filtering method applied to transform scalp signals into regions of interest) have high specificity (>95%) and sensitivity (81%–85%) for IED identification, similar to expert scorings.4
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