Analysis of ictal EEG in benigh infantile convulsions.

概要

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The authors carried out ictal EEG and/or simultaneous EEG and video tape recordings in 7 patients with benign infantile convulsions (Fukuyama, 1963) and analyzed the ictal phenomenon in detail. The study demonstrated that seizures in 5 of 7 cases with this condition, which had been considered to be of apparently primary generalized, turned out actually to be of secondarily generalized one. The interval between the start of paroxysmal discharges at a certain limited area to its full generalization ranged from about 20 to 40 seconds. The sites, from which ictal discharges began to appear on the EEG, were the unilateral temporal area in 4 cases and the frontal area in 4 another one. In the rest two cases, focal onset of epileptiform discharges was difficult to be recognized, partly due to the mixture of body movement artifacts and partly due to the short interval if any present.<BR>Since only the latter 2 cases were accompanied with diarrhea at the time of convulsions, it cannot be denied the possibility that neurophysiological mechanism of convulsions in the diarrheic infants might be different from that in non-diarrheic infants.
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