Nineteen healthy heterosexual males ( mean age 24 years , SD 3.1 ) under subchronic intake ( 7 days ) of the noradrenergic agent reboxetine ( 4 mg/d ) , the antidopaminergic agent amisulpride ( 200mg/d ) , and placebo were included and studied with functional magnetic resonance imaging within a randomized , double-blind , placebo-controlled , within-subjects design during an established erotic video-clip task .