Figure 1.

Schematic representation of the reward task. There were two types of trials: neutral trials (A) and potentially rewarding trials (B) as indicated by the cue (neutral face for a neutral trial and a smiling face for a potentially rewarding trial). Subjects had to press a button as fast as possible when the target stimulus appeared. The fixation time between cue and target was varied. Feedback was given after the response and indicated via color if the response was given within the time limit (green) or not (red). Also the amount of money won in that trial was presented (either +1 or +0). Finally, the cumulative amount of money won was presented. [Color figure can be viewed in the online issue, which is available at http://wileyonlinelibrary.com.]