Assuntos
Quelantes/uso terapêutico , Degeneração Hepatolenticular/complicações , Transtornos dos Movimentos/etiologia , Penicilamina/uso terapêutico , Comportamento Estereotipado , Adulto , Gânglios da Base/patologia , Feminino , Pé , Degeneração Hepatolenticular/tratamento farmacológico , Degeneração Hepatolenticular/patologia , Degeneração Hepatolenticular/fisiopatologia , Humanos , Imageamento por Ressonância Magnética , Transtornos dos Movimentos/tratamento farmacológico , Transtornos dos Movimentos/patologia , Transtornos dos Movimentos/fisiopatologia , Comportamento Estereotipado/efeitos dos fármacosRESUMO
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 polyspikes and slow wave paroxysmal 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.
Assuntos
Cor , Epilepsia/etiologia , Estimulação Luminosa/efeitos adversos , Adolescente , Adulto , Criança , Eletroencefalografia , Epilepsia/fisiopatologia , Feminino , Filtração/instrumentação , HumanosRESUMO
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
Assuntos
Adolescente , Adulto , Humanos , Feminino , Cor , Epilepsia/etiologia , Estimulação Luminosa/efeitos adversos , Eletroencefalografia , Filtração/instrumentaçãoRESUMO
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 polyspikes and slow wave paroxysmal 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.
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 (AU)
Assuntos
Adolescente , Adulto , Humanos , Feminino , Epilepsia/etiologia , Estimulação Luminosa/efeitos adversos , Cor , Filtração/instrumentação , EletroencefalografiaRESUMO
This is a report of a 21-year-old woman with reading epilepsy. Clinical and electroencephalographic (EEG) observations are presented while the patient read a news magazine in Spanish, read a magazine in English, read an announcement repetitively, viewed comic strips without legends, made a mathematical calculation. Only reading in Spanish produced clinical and EEG paroxysms. This case report supports the "communication" hypothesis as opposed to hypotheses that emphasize proprioceptive and other "lower order" stimuli in evoking seizures while reading.
