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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