Steady-state visual evoked potentials and phase synchronization in   migraine
  We investigate phase synchronization in EEG recordings from migraine patients. We use the analytic signal technique, based on the Hilbert transform, and find that migraine brains are characterized by enhanced alpha band phase synchronization in presence of visual stimuli. Our findings show that migraine patients have an overactive regulatory mechanism that renders them more sensitive to external stimuli. 
L. Angelini, M. De Tommaso, M. Guido, K. Hu, P. Ch. Ivanov, D.   Marinazzo, G. Nardulli, L. Nitti, M. Pellicoro, C. Pierro, ...