RT Book, Section A1 Blume, Warren T. A2 Duchowny, Michael A2 Cross, J. Helen A2 Arzimanoglou, Alexis SR Print(0) ID 1138409418 T1 EEGs: When, How, and Why T2 Pediatric Epilepsy YR 2017 FD 2017 PB McGraw-Hill Education PP New York, NY SN 9780071496216 LK neurology.mhmedical.com/content.aspx?aid=1138409418 RD 2024/04/20 AB Ictal symptoms and signs reflect area(s) of the brain involved in the seizure. Events early in the seizure have greater localizing value than later ones as these latter may result from propagation. As certain symptoms, such as a rising abdominal sensation in a focal seizure, may result from involvement of any one of two or more anatomically distinct regions usual accompanying phenomena may help to distinguish possible ictal areas of origin. Therefore, a cluster of patient- and observer-reported phenomena will more accurately chart seizure origin and propagation than will a single symptom or sign. Knowledge of cortical, thalamic, and brain stem physiology will equip the physician with insightful questions of the patient and associates and will allow perceptive evaluations of video-telemetry seizure depictions. Not only will such scrutiny localize most focal seizures but also it will often distinguish primary generalized from secondarily generalized seizures.1