title: The effects on the EEG of intermittent photic stimulation in patients over 30 years of age.
abstract: Fifty-two patients over 30 years of age with EEG abnormality during IPS are described. In many, the disturbance was of "intermediate" type, that is limited in distribution and of lower voltage than the typical photo-convulsive response. Although over half the patients had epilepsy, this was often mild, complicating a variety of other conditions. The presence of these responses to IPS probably indicates a lowered seizure threshold.
mesh_terms: D000328:Adult; D000368:Aged; D004569:Electroencephalography; D004827:Epilepsy / Q000503:physiopathology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010775:Photic Stimulation; D012640:Seizures / Q000503:physiopathology