Figure 4
Examples of the trial sequence in the MID and SID tasks. Participants were asked to discriminate the shape of the target figure (triangle or square). During the reward anticipation period, a hollow circle or a circle with one or two horizontal lines signaled the magnitude of the potential reward in the current trial. Based on the task, the reward magnitude of the current trial and the participant’s response, Chinese coins or smiling faces were presented as monetary or social reward feedback stimuli.
