Multi-modal MRI Reveals the Neurovascular Coupling Dysfunction in Chronic Migraine

Area of Science:

• Neuroscience
• Radiology

Background:

• Long-term pain can cause neurovascular coupling (NVC) dysfunction.
• Previous studies used limited unimodal imaging, failing to fully capture NVC dysfunction.

Purpose of the Study:

• Investigate NVC dysfunction in chronic migraine.
• Explore the relationship between neuronal activity and cerebral perfusion.
• Identify novel NVC biomarkers for chronic migraine assessment.

Main Methods:

• Utilized multi-modal MRI to assess NVC.
• Calculated Pearson correlation coefficients between neuronal activity and cerebral perfusion maps as NVC biomarkers.
• Compared NVC biomarkers between migraineurs and controls.

Main Results:

• Migraineurs showed significantly lower NVC biomarkers in the left inferior parietal gyrus (IPG), left superior marginal gyrus (SMG), and left angular gyrus (AG).
• Migraineurs exhibited significantly higher NVC biomarkers in the right superior occipital gyrus (SOG), right superior parietal gyrus (SPG), and precuneus.
• Specific NVC biomarkers correlated with disease history, migraine duration, headache frequency, and health status.

Conclusions:

• Multi-modal MRI can detect NVC dysfunction in chronic migraine.
• This approach provides a new method to evaluate the brain's response to chronic pain.
• Findings highlight the involvement of parietal and occipital regions in chronic migraine-related NVC dysfunction.