Light-induced seizures

Wadlington, William B.; Riley, Harris D.

doi:10.1016/s0022-3476(65)80187-1

Cited by 19 publications

(10 citation statements)

References 20 publications

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“…One review of 20,000 EEGs discovered eight patients who had seizures induced by light in a natural setting, 17 with seizures that could be induced in a laboratory setting, and 225 with photoparoxysmal EEG activity only (40). This would suggest that ∼1.25% of individuals might have an abnormal EEG response to certain types of light stimulation, among those referred for EEGs.…”

Section: Epidemiology Of Photosensitivitymentioning

confidence: 99%

Photic‐ and Pattern‐induced Seizures: A Review for the Epilepsy Foundation of America Working Group

et al. 2005

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Summary: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.

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Section: Epidemiology Of Photosensitivitymentioning

confidence: 99%

Photic‐ and Pattern‐induced Seizures: A Review for the Epilepsy Foundation of America Working Group

et al. 2005

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“…Unfortunately, data from large-scale series about safety and efficacy are sparse. In 20,000 cases collected over eleven years [5] PPRs were reported in 225 cases un-associated with accompanying ''convulsions'' and in a further 25 cases ''convulsions'' were induced by PS. In a more recent retrospective series five cases of myoclonic jerks and one of dizziness and distress from 732 undergoing PS were reported [6].…”

Section: Introductionmentioning

confidence: 99%

Photic stimulation during electroencephalography: Efficacy and safety in an unselected cohort of patients referred to UK neurophysiology departments

Whitehead

Sherratt

Kandler

et al. 2016

Seizure

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“…In addition, the PCR has been found in up to 15 per cent of healthy children * Research aided by the Deutsche Forschungsgemeinschaft. and adults [2,3,9,13,21,29,38,39]. Most of the publications dealing with the clinical aspects of photosensitivity refer to the various forms of epilepsy associated with this condition.…”

Section: Introductionmentioning

confidence: 99%

Observations in photosensitive children with and without epilepsy

1969

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Summary. The course of convulsive disease in 195 photosensitive children was analysed. Of these, 168 were suffering from cerebral seizures and 27 from various other disorders. Only four of the patients occasionally exhibited photogenic seizures. In all the other cases the cerebral seizures occurred independently of intermittent light stimuli.i. The clinical picture of photosensitive epilepsy varies widely. Virtually all known forms of seizures and courses of illness may be seen. In the group investigated, febrile and afebrile grand real attacks predominated. Focal seizures and petit real followed in third and fourth place respectively.2. Photosensitive epilepsies are more common in females than in males.3. The course of photosensitive epilepsy is often highly malignant. This applies especially when focal symptoms are present and when the onset of the disease took place after the fifth year of life.4. A total of 67 per cent of the patients first suffered seizures before the sixth year of life, i.e. before the age of maximum penetrance of photosensitivity.5. Investigation of the family histories of the patients indicated that the appearance of the disease in early childhood was affected by additional genetic factors, probably independent of photosensitivity itself.6. Photosensitivity is to be regarded as a symptom of a gene-dependent functional disorder. The activability of this via optic afferents is markedly age-linked.

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Light-induced seizures

Cited by 19 publications

References 20 publications

Photic‐ and Pattern‐induced Seizures: A Review for the Epilepsy Foundation of America Working Group

Photic‐ and Pattern‐induced Seizures: A Review for the Epilepsy Foundation of America Working Group

Photic stimulation during electroencephalography: Efficacy and safety in an unselected cohort of patients referred to UK neurophysiology departments

Observations in photosensitive children with and without epilepsy

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