Abstract
Review of 20,000 electroencephalograms obtained during an 11 year period revealedrecords of 250 patients with abnormal patterns following photic stimulation. Of this number, 25subjects exhibited overt convulsions in association with photic stimulation. Seven had definite evidence of mental retardation, and in two the light-sensitive seizures were self-induced. Clinical and electroencephalographic findings of several patients are described. The remaining 225 children had electroencephalographic evidence of seizure discharge in response to light-stimulation, but without overt convulsive activity. The mechanism of convulsive activity, relationship to cerebral damage, genetic aspects, causative factors, and management are reviewed.
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