Fig. 2

a Grand mean power across subjects at the contralateral C3 electrode for the sensorimotor task in controls and interictal migraine patients. b Grand mean power across subjects at the contralateral C3 electrode for the sensorimotor task in migraine patients for interictal and preictal recordings. First two seconds (−3 to − 1) represent pre-movement onset baseline. 0 represent start of movement. Broken vertical lines indicate the selected interval (1 to 3 s) for the ERD period