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. 2014 Apr 30;8:149. doi: 10.3389/fnbeh.2014.00149

Figure 1.

Figure 1

An illustration of stimulus events in a single trial. At the beginning of each trial two buttons were presented on the screen (Alternatives). The participants had to choose one of the buttons. Each selection was followed by a presentation of the obtained payoff on the selected alternative and the obtained-payoff counter for 2 s. After a 1 s interval the next trial began. Following each choice response the total payoff counter was updated. In this example the participant selected the left button and gained 25 points.