Pattern reversal visual evoked potentials in migraine subjects without aura
نویسندگان
چکیده
منابع مشابه
Pattern reversal visual evoked potentials in migraine subjects without aura.
Twenty seven patients with migraine without aura were investigated. The age was between 12 and 54 years; 5 were men and 22 women. The diagnosis of migraine was made according to the classification proposed by the International Headache Society. The method of visual evoked potential was performed with pattern reversal (VEP-PR), with monocular stimulation. The stimulation was performed with patte...
متن کاملThe pattern--reversal visual evoked potentials in children with migraine with aura and without aura.
PURPOSE Studies of the visual evoked potentials (VEP) in migraine have yielded contradictory results. Several investigators suggested that VEP may be helpful test in diagnosis of a child with headache. The aim of our study was to compare interictal pattern-reversal visual evoked potentials (PR-VEP) in children and adolescents with migraine and tension-type headaches and to evaluate VEP paramete...
متن کاملEffects of light deprivation on visual evoked potentials in migraine without aura
BACKGROUND The mechanisms underlying the interictal habituation deficit of cortical visual evoked potentials (VEP) in migraine are not well understood. Abnormal long-term functional plasticity of the visual cortex may play a role and it can be assessed experimentally by light deprivation (LD). METHODS We have compared the effects of LD on VEP in migraine patients without aura between attacks ...
متن کاملVisual evoked potentials during long periods of pattern-reversal stimulation in migraine.
We have previously shown that during repetitive pattern-reversal stimulation, lasting 2 min, the amplitude of the visual evoked potential (PR-VEP) increases in migraineurs when tested interictally whereas it decreases in healthy control subjects. According to Sappey-Marinier et al. (J Cereb Blood Flow Metab 1992; 12: 584-92) habituation of the PR-VEP in normal subjects is maxima after 12 min, a...
متن کاملValue of hyperventilation in pattern-reversal visual evoked potentials.
The effects of a standard 3 minutes' hyperventilation on the full-field pattern-reversal visual evoked potential (VEP) were studied in 33 normal subjects, 30 definite multiple sclerosis patients and in twenty-five patients with abnormal VEPs due to either tumourous compression of the anterior visual pathways or optic atrophy of other origin. Significantly greater reductions in P100 latency occu...
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ژورنال
عنوان ژورنال: Arquivos de Neuro-Psiquiatria
سال: 1994
ISSN: 0004-282X
DOI: 10.1590/s0004-282x1994000400005