Fig. 1.

Sequence of stimulus and response events presented in one single trial in the gambling paradigm used in the present study (Camara et al., 2010; Marco-Pallarés et al., 2008; Padrão et al., 2013). After a warning signal (400 ms), a set of two numbers ([5 25] or [25 5]) was shown. Participants were instructed to select one of the two alternatives by pressing the corresponding button on the left- or right-hand side (response). One second after the response choice (800 ms), one of the numbers turned red and the other green (feedback) indicating a gain (green) or loss (red) of the corresponding amount of money in Euro cents. (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)