Figure 1
Interictal and ictal EEG recordings at the time of headache attacks.
(A) Seizure onset (from the left posterior quadrant on scalp EEG). (B) Evolving ictal EEG pattern during the headache attack showing the spread of ictal activity. (C) Interictal abnormality with flat non-organised background activity over the left hemisphere and central left/midline spikes.
Longitudinal bipolar montage; amplitude: 150 uV/cm; speed: 10 mm/s.