Fig. 1.

Diagram for scan sequence. Diagram depicting two scans, each with two scan session blocks. The first has the acceptance block followed by the rejection block and the second has two neutral blocks. Asterisks (*) indicates when mood/self-esteem was assessed with questions. Each block began five minutes post injection, with 6 stimuli or neutral panels each followed by mood/self-esteem questions (during stimuli questions), then approximately 5 min with no stimulus, followed by ‘after stimuli’ questions. A five-minute break separates the first and second blocks of both scans. Order of stimuli and neutral scans and order of blocks within the stimuli scan were counterbalanced between subjects.