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Colour and photosensitive epilepsy
Medicina (B.Aires) ; 51(4): 327-30, 1991. ilus, tab
Article Dans Anglais | LILACS | ID: lil-108066
RESUMO
In this study we relate our experience in 7 cases of photosensitive epilepsy and the effect of different types of filters upon the photoconvulsive response (PR). The study was performed with an 8 channels electroencephalograph and the patients were stimulated with a Joule lamp (1 c/sec-30 c/sec). Red, yellow, blue and green cellophane paper filters were used. The EEG response presented bilateral spikes or polyspiks and slow wave paroxystic discharges. In the presence of a blue filter, the PR appeared later an average of 6 seconds of closing the eyes and the response had a lower amplitude. In addition the PR did not appear or it was blocked when we used a double blue filter. These results support the role of the retina in the genesis of the PR. We suggest that the blue filter allows a small percentage of light transmission and under these conditions the electrical events that follow light stimulation do not occur
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Indice: LILAS (Amériques) Sujet Principal: Stimulation lumineuse / Couleur / Épilepsie Limites du sujet: Adolescent / Adulte / Femelle / Humains langue: Anglais Texte intégral: Medicina (B.Aires) Thème du journal: Médicament Année: 1991 Type: Article

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Indice: LILAS (Amériques) Sujet Principal: Stimulation lumineuse / Couleur / Épilepsie Limites du sujet: Adolescent / Adulte / Femelle / Humains langue: Anglais Texte intégral: Medicina (B.Aires) Thème du journal: Médicament Année: 1991 Type: Article