Feedback processing in attack and defense conflicts: a neurophysiological study
Paiva, T. O.; Coelho, R. C.; Pasion, R.; Dias-Oliveira, E.; De Dreu, C.; Barbosa, F.
Show abstract
Despite being extensively modelled to explore decision making processes in economic tasks, there are no studies exploring the neurophysiological correlates of the Predator-Prey Game, a game theory paradigm designed to operationalize attack and defence conflicts. In the present study, we explored the relationship between the ERP components associated with feedback, namely feedback-related negativity (FRN) and feedback -elated P3b, and investment in an adapted version of the Predator-Prey Game (PPG), operationalizing attack and defence. Forty-seven (28 female) community-dwelling volunteers without history of neurological disease were recruited. Participants played the PPG game both as attackers and defenders while EEG signal was recorded with a 128 channels sensor net. Behavioural results showed that individuals tend to invest more and decide faster when playing in defence, rather than in attack. Electrophysiological data showed FRN to be sensitive to the valence of feedback, with increased amplitudes of FRN loss feedbacks. On the other hand, the P3b amplitudes were sensitive to the role, with increased amplitude for attack when compared with defence. The integration of the behavioural and ERP findings supports the theoretical model positing that attack elicits more deliberate and less automatic brain processes than defence.
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