Evaluation of Visual Perception in Migraine


Başarı A., Belen H. B., Cengiz B., Boran H. E., Vurallı D.

Global Mİgraine and Pain Summit, 5th MENA meeting and 3rd Turkish African Meeting of Headache and Pain Management, Antalya, Turkey, 27 - 30 October 2021, pp.38

  • Publication Type: Conference Paper / Summary Text
  • City: Antalya
  • Country: Turkey
  • Page Numbers: pp.38
  • Gazi University Affiliated: Yes

Abstract

Background and Objective: Various visual complaints are described by migraine patients. Visual temporal discrimination (VTD) is the ability to discriminate and react to the movement, contrast, location and contours of two sequential visual stimuli. We aimed to evaluate the temporal discrimination of visual perception in migraine patients. Methodology: 15 migraine without aura patients and 15 healthy volunteers were included. Migraine patients were examined twice, once during the attack period and once during the interictal period. Results: The mean ictal VTD threshold value of the ipsilateral visual field (143.8±53.8 ms) was significantly higher than the mean interictal VTD threshold value of the ipsilateral visual field (78.0±19.6 ms, p= 0.025). Ictal VTD threshold values (102.3±38.4 ms for the right visual field and 106.3±52.2 ms for the left visual field) and interictal VTD threshold values (75.2±27.9 ms for the right visual field and 77.2±27.9 ms for the left visual field) were significantly higher than the VTD threshold values of the healthy controls (45.3±9.9 ms for the right visual field and 48.2±11.9 ms for the left visual field, p<0.001, p<0.01, p=0.003 and p<0.001 respectively). Conclusion: We showed for the first time that VTD threshold values were higher in migraine patients both during an attack and during the interictal period compared to healthy controls. Additionally ictal VTD threshold values of the ipsilateral visual field were significantly higher compared to the interictal VTD threshold values. According to neuroanatomic pathway of VTD, visual processing involving brain stem, basal ganglia and thalamus seems to be defective in migraine patients.