Fig. 1.

Schematic depiction of the modified MID task. Participants alternated between ′money′ and ′face′ runs, and ′win′ and ′loss′ runs, denoted by an instructional screen at the start of each run. Each trial consisted of a cue (i.e. a gray triangle indicates a ‘win’ trial and a red triangle indicates a ‘loss’ trial), an anticipatory delay, a target and outcome feedback. Not shown: in all runs, a blue circle cue appeared in 50% of trials, indicating a non-incentivized trial in which a ‘hit’ resulted in a check mark and a ‘miss’ in an ‘X’.