FIGURE 3.

Comparison of blood oxygen level‐dependent (BOLD) responses to glucose ingestion after glyceryl trinitrate (GTN) provocation in migraine and control participants. The BOLD response to glucose after GTN did not differ from the BOLD response at baseline (without prior GTN infusion) in controls (a) but was higher in migraine participants (b). The BOLD response to glucose after GTN is higher in migraine participants then in control participants, although not significant (c). Grey box indicates drinking period of which data were omitted from the analysis because they are considered drinking artefacts. Error bars indicate 1 standard error