Fig. 6From: Cerebral reactivity in migraine patients measured with functional near-infrared spectroscopySample of recorded NIRS data during medication infusion (DHE for this subject) on a migraine patient: near channel (on left) measures oxyhemoglobin (HbO2) and total hemoglobin (THb) changes during the infusion on the skin while far channels (on right) measure both skin and cortical activities. Blue line infusion timeBack to article page