Quantitative electroencephalogram analysis of frontal cortex functional changes in patients with migraine

Area of Science:

• Neuroscience
• Pediatric Neurology

Background:

• Migraine pathophysiology, particularly in children, requires further elucidation.
• Previous functional neuroimaging studies (e.g., fMRI) yielded heterogeneous results.
• Identifying reliable tools for pediatric migraine research is crucial.

Purpose of the Study:

• To investigate functional brain abnormalities in children with migraine using electroencephalogram (EEG).
• To explore the utility of low-resolution electromagnetic tomography (LORETA) in pediatric migraine research.

Main Methods:

• Utilized EEG to analyze brain activity in 40 children with migraine and 40 age/sex-matched healthy controls.
• Applied LORETA analysis to EEG bands to assess functional differences.
• Measured spectrum edge frequency 50 (SEF50) across all EEG channels.

Main Results:

• Migraine patients exhibited lower SEF50 compared to controls across all EEG channels.
• Significant differences in brain activity were observed in frontal regions.
• Elevated current density in the frontopolar and orbitofrontal cortex, and increased left prefrontal cortex connectivity were noted in migraineurs.

Conclusions:

• Functional disturbance in the prefrontal cortex may contribute to pediatric migraine.
• EEG combined with LORETA analysis is a viable and convenient method for studying functional brain alterations in childhood migraine.