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Insular and occipital changes in visual snow syndrome: a BOLD fMRI and MRS study

7/21/2021

 
ResultsWe found reduced BOLD responses to the visual stimulus with respect to baseline in VS patients compared to controls, in the left (k = 291; P = 0.025; peak MNI coordinate [-34 12 -6]) and right (k = 100; P = 0.003; peak MNI coordinate [44 14 -2]) anterior insula. Our spectroscopy analysis revealed a significant increase in lactate concentrations in patients with respect to controls (0.66 ± 0.9 mmol/L vs. 0.07 ± 0.2 mmol/L; P < 0.001) in the right lingual gyrus. In this area, there was a significant negative correlation between lactate concentrations and BOLD responses to visual stimulation (P = 0.004; r = −0.42), which was dependent on belonging to the patient group.

onlinelibrary.wiley.com/doi/full/10.1002/acn3.50986?fbclid=IwAR3e5p3JGgl1mfwgbVOFrEe0y63oLpSrqYuQwgaWJnSE3HveG3Ek-CoTK4Q


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  • Home
  • WHAT IS VISUAL SNOW SYNDROME
    • What is Visual Snow Syndrome >
      • Visual Snow Syndrome Overview
    • Visual Snow Resources
    • Symptoms >
      • Blue Field Entoptic Phenomenon
      • Brain Fog
      • Eye Floaters
      • Glare
      • Nyctalopia
      • Oscillopsia
      • Palinopsia
      • Paresthesia
      • Phosphenes
      • Photophobia
      • Silent Migraine
      • Tinnitus
      • Vertigo
  • HOW TO HELP
    • Donate Once
    • Make a Recurring Donation
    • Corporate Giving & Partners
    • Subscribe
    • Connect with us on Social Media
    • Share your VSS story
    • You Can Fundraise >
      • Volunteer Agreement
    • Events
  • WHAT WE DO
    • About
    • Research & News
    • Research Collaborations
    • Meet our VSS Community
  • Donate