Psychobiological Mechanisms Underlying Chronic Pain

Healthy controls and fibromyalgia patients will be administered a single dose of bromocriptine (1.25mg, p.o.) to investigate the effect of transiently increasing the availability of dopamine on fronto-striatal functional connectivity and BOLD response in relation to emotional-motivational pain processing.

Healthy controls will be administered a single dose of amisulpride (400mg, p.o.) to investigate the effect of transiently decreasing the availability of dopamine on fronto-striatal functional connectivity and BOLD response in relation to emotional-motivational pain processing.

Healthy controls and fibromyalgia patients will be administered a placebo as for comparison with the effects of bromocriptine (healthy controls and patients) and amisulpride (healthy controls only) on fronto-striatal functional connectivity and BOLD response in relation to emotional-motivational pain processing.