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ORIGINAL ARTICLE
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Evaluation of electrophysiological changes in migraine with visual aura


 Department of Ophthalmology, T.C. Saglik Bakanligi, Ankara Bilkent City Hospital, Ankara, Turkey

Correspondence Address:
Neslihan Bayraktar Bilen,
Gayret Mah. Oruc Reis Sk. Parkciftlik Konutlari CK-6/17 Yenimahalle, Ankara
Turkey
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/2211-5056.354281

PURPOSE: The purpose of this study was to evaluate the electrical responses in the retina and cortex of migraine patients with electrophysiological tests and compare with healthy controls. MATERIALS AND METHODS: This prospective study included 18 migraine patients with visual aura and 28 healthy controls. Pattern-reversal visual evoked potentials (VEP) and flash electroretinography (fERG) of migraine patients during the headache-free period were compared with healthy controls. RESULTS: There were statistically significant differences in VEP results: P100 and N75 amplitudes increased significantly (P = 0.025 and P = 0.007 respectively) and P100 latency decreased significantly in migraine patients (P = 0.022). Furthermore, fERG scotopic combined cone and rod amplitude increased significantly in migraine patients (P = 0.01). CONCLUSION: Migraine brain displays abnormal visual evoked responses in between migraine attacks. In migraine eye, scotopic cone and rod response increased. The results of this study support the hyperexcitability of the retina and cortex in patients with migraine.


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    -  Hamurcu MS
    -  Bilen NB
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