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Visual evoked potentials and brainstem auditory evoked potentials in migraine and transient ischemic attacks
Summary
Brainstem auditory evoked potentials (BAEPs) show alterations in patients with vertebrobasilar TIA, but not in migraine patients. Visual evoked potentials (VEPs) were normal in both groups, indicating BAEPs
Area of Science:
- Neuroscience
- Clinical Electrophysiology
Background:
- Migraine and vertebrobasilar transient ischemic attack (TIA) are distinct neurological conditions.
- Evaluating cortical-subcortical functions is crucial for differential diagnosis.
Purpose of the Study:
- To comparatively evaluate cortical-subcortical functions in patients with common migraine and vertebrobasilar TIA.
- To assess the utility of brainstem auditory evoked potentials (BAEPs) and pattern reversal visual evoked potentials (VEPs) in differentiating these conditions.
Main Methods:
- Recording of BAEPs and VEPs in the intercritical phase.
- Study conducted on 20 subjects: 10 with common migraine and 10 with vertebrobasilar TIA.
Main Results:
- BAEPs alterations were observed in patients with previous vertebrobasilar TIA.
- No abnormalities in BAEPs were found in the migraine group.
- VEPs parameters remained normal in both patient groups.
Conclusions:
- BAEPs are useful in detecting damage from noxa, particularly in vertebrobasilar TIA.
- Stimulus-related potentials like BAEPs and VEPs may not clearly identify individual predisposing factors for specific pathologies, as seen in migraine patients.