Differential resting-state MEG microstate patterns in migraineurs: a cross-sectional study
Abstract
BACKGROUND: Magnetoencephalography (MEG) microstates offer distinct and complementary insights into brain activity compared to electroencephalography microstates, but their role in migraine remains incompletely understood. This study used optically pumped magnetometer MEG (OPM-MEG) to compare resting-state microstate patterns between migraineurs and healthy controls and to evaluate their correlations with clinical characteristics.
METHODS: Resting-state OPM-MEG data were collected in this cross-sectional study. Parameters of six MEG microstate classes (Ms1-Ms6) were calculated and compared between migraineurs and healthy controls. The E-value and its lower control limit were assessed for sensitivity analysis. Pearson correlation coefficients were employed to investigate the relationships between microstate parameters and clinical traits.
RESULTS: The study included 25 migraine patients without aura (21 females) and 18 healthy controls (13 females). Compared to healthy controls, migraineurs exhibited significantly higher coverage and occurrence per second of Ms2 and greater coverage of Ms6, whereas these parameters of Ms3 were lower. Transition probabilities among microstates (especially Ms2, Ms3, and Ms6) also differed between groups. In migraineurs, the coverage and transition probabilities of Ms3 and Ms6 were negatively correlated with headache attack duration, intensity, and scores on the Headache Impact Test-6.
CONCLUSIONS: These findings provided evidence for a…
How strong is the evidence?
Evidence Hub reads this as a cross-sectional, done in people. Its evidence level is 4 of 5 (Low · observational). Observational designs can show an association but not prove cause. Reported size: 25 participants or records.
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