Photic- and pattern-induced seizures: A review for the epilepsy foundation of america working group

Robert S. Fisher*, Graham Harding, Giuseppe Erba, Gregory L. Barkley, Arnold Wilkins

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

Purpose: This report summarizes background material presented to a consensus conference on visually provoked seizures, convened by the Epilepsy Foundation of America. Methods: A comprehensive review of literature was performed. Results: Photosensitivity, an abnormal EEG response to light or pattern stimulation, occurs in ∼0.3-3% of the population. The estimated prevalence of seizures from light stimuli is ∼1 per 10,000, or 1 per 4,000 individuals age 5-24 years. People with epilepsy have a 2-14% chance of having seizures precipitated by light or pattern. In the Pokemon cartoon incident in Japan, 685 children visited a hospital in reaction to red-blue flashes on broadcast television (TV). Only 24% who had a seizure during the cartoon had previously experienced a seizure. Photic or pattern stimulation can provoke seizures in predisposed individuals, but such stimulation is not known to increase the chance of subsequent epilepsy. Intensities of 0.2-1.5 million candlepower are in the range to trigger seizures. Frequencies of 15-25 Hz are most provocative, but the range is 1-65 Hz. Light-dark borders can induce pattern-sensitive seizures, and red color also is a factor. Seizures can be provoked by certain TV shows, movie screen images, video games, natural stimuli (e.g, sun on water), public displays, and many other sources. Conclusions: Recommendations on reducing risk of seizures have been developed by agencies in the United Kingdom, Japan, and the International Telecommunications Union, affiliated with the United Nations. The Epilepsy Foundation of America has developed a consensus of medical experts and scientists on this subject, reported in an accompanying work.

Original languageEnglish
Pages (from-to)1426-1441
Number of pages16
JournalEpilepsia
Volume46
Issue number9
DOIs
Publication statusPublished - 1 Sep 2005

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Epilepsy
Seizures
Cartoons
Light
Television
Japan
Telecommunications
Video Games
United Nations
Solar System
Motion Pictures
Electroencephalography
Color
Water
Population

Keywords

  • Epilepsy
  • Photosensitivity
  • Reflex seizures
  • Review
  • Seizures

Cite this

Fisher, Robert S. ; Harding, Graham ; Erba, Giuseppe ; Barkley, Gregory L. ; Wilkins, Arnold. / Photic- and pattern-induced seizures : A review for the epilepsy foundation of america working group. In: Epilepsia. 2005 ; Vol. 46, No. 9. pp. 1426-1441.
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Photic- and pattern-induced seizures : A review for the epilepsy foundation of america working group. / Fisher, Robert S.; Harding, Graham; Erba, Giuseppe; Barkley, Gregory L.; Wilkins, Arnold.

In: Epilepsia, Vol. 46, No. 9, 01.09.2005, p. 1426-1441.

Research output: Contribution to journalArticle

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