Fig. 6
From: Dynamic brainstem and somatosensory cortical excitability during migraine cycles
S1 activation during migraine cycle. Differences in normalised peak S1 intensity among migraine cycles (n = 6) and migraine phases (Pre2, Pre1, Ictal, Post1, and Interictal). *, P < 0.05; **, S1, primary somatosensory cortex; Pre2, 24–48 h before headache onset; Pre1, within 24 h before headache onset; Ictal, during migraine attack; Post1, within 24 h after headache offset; Interictal, the period ˃48 h between the last and next headache phase