Related Experiment Videos
Pattern reversal visual evoked potentials in migraine subjects without aura
P F Moreira Filho1, A M Dantas
1Department of Clinical Medicine (Neurology), Hospital Universitário Antônio Pedro, Universidade Federal Fluminense, Rio de Janeiro, Brasil.
Arquivos De Neuro-Psiquiatria
|December 1, 1994
Summary
Visual evoked potential with pattern reversal (VEP-PR) is useful for diagnosing migraine without aura. This study found VEP-PR can detect abnormalities in migraine patients, aiding in diagnosis.
Area of Science:
- Neuroscience
- Ophthalmology
- Neurology
Background:
- Migraine without aura is a common neurological disorder.
- Accurate diagnosis is crucial for effective management.
- Visual evoked potentials (VEPs) are used to assess the visual pathway's integrity.
Purpose of the Study:
- To evaluate the utility of pattern reversal visual evoked potential (VEP-PR) in diagnosing migraine without aura.
- To investigate potential differences in VEP-PR responses between migraine patients and controls (implied).
Main Methods:
- Twenty-seven patients diagnosed with migraine without aura were studied.
- Monocular VEP-PR was performed using black/white and red/green stimuli.
- Stimuli were presented at a 1-meter distance with a 1 Hz frequency, analyzing 128 trials.
Main Results:
- A significant increase in P-100 latency was observed in 10 migraine patients.
- Eight patients showed normal VEP-PR in black/white but increased latency with red/green stimuli.
- One case exhibited absent red/green VEP-PR waves despite normal black/white responses.
Conclusions:
- VEP-PR is a valuable tool for investigating migraine patients without aura.
- Color (red/green) VEP-PR may reveal abnormalities not detected by standard black/white VEP-PR.
- VEP-PR can aid in the objective assessment and diagnosis of migraine without aura.