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Titolo:
Photosensitivity in relation to epileptic syndromes: A survey from an epilepsy center in Japan
Autore:
Shiraishi, H; Fujiwara, T; Inoue, Y; Yagi, K;
Indirizzi:
Shizuoka Higashi Hosp, Natl Epilepsy Ctr, Shizuoka 4208688, Japan ShizuokaHigashi Hosp Shizuoka Japan 4208688 tr, Shizuoka 4208688, Japan
Titolo Testata:
EPILEPSIA
fascicolo: 3, volume: 42, anno: 2001,
pagine: 393 - 397
SICI:
0013-9580(200103)42:3<393:PIRTES>2.0.ZU;2-E
Fonte:
ISI
Lingua:
ENG
Soggetto:
PHOTOCONVULSIVE RESPONSES; STIMULATION;
Keywords:
photosensitivity; photosensitive epilepsy; epileptic syndrome; photoparoxysmal response;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
20
Recensione:
Indirizzi per estratti:
Indirizzo: Shiraishi, H Shizuoka Higashi Hosp, Natl Epilepsy Ctr, 886 Urushiyama, Shizuoka 4208688, Japan Shizuoka Higashi Hosp 886 Urushiyama Shizuoka Japan 4208688
Citazione:
H. Shiraishi et al., "Photosensitivity in relation to epileptic syndromes: A survey from an epilepsy center in Japan", EPILEPSIA, 42(3), 2001, pp. 393-397

Abstract

Purpose: We examined the incidence and distribution of photosensitivity among the different age groups and different types of epilepsies and epileptic syndromes. Furthermore, we considered the influence of ethnic and geographic factors on the incidence of photoparoxysmal response (PPR) in epilepsy patients. Methods: We analyzed the responses to intermittent photic stimulation (TPS) by using a Grass PS22 or PS33 photic stimulator for in 2,187 unselected patients with epilepsy who were treated in our center. Results: The classic PPR was elicited in 37 (1.7%) patients. The mean age of these 37 patients was 17.0 years. The subpopulation of patients having PPR included 2.0% of all patients with symptomatic generalized epilepsy, 5.6% (p < 0.01) of those with idiopathic generalized epilepsy, 0.7% of those with symptomatic localization-related epilepsy, and 2.9% of those with undetermined epilepsy. PPR accounted for 17.4 % (p < 0.01) of the patients with juvenile myoclonic epilepsy, 7.6% (p < 0.01) of those with grand mal on awakening, and 6.1% (p < 0.01) of those with symptomatic occipital lobe epilepsy. The incidence of PPR increased in patients up to age 15 years, and suddenly decreased after age 20 years. Conclusion: The present study presents the first report from eastern Asia,analyzing the incidence of PPR with a restricted definition comparable to the other studies, and the rate of PPR was relatively low compared with thestudies performed in the European countries. We could confirm the clear relation between age and positive PPR.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/01/20 alle ore 22:17:06