Effects of affective arousal on choice behavior, reward prediction errors, and feedback-related negativities in human reward-based decision making.

ABSTRACT: Emotional experience has a pervasive impact on choice behavior, yet the underlying mechanism remains unclear. Introducing facial-expression primes into a probabilistic learning task, we investigated how affective arousal regulates reward-related choice based on behavioral, model fitting, and feedback-related negativity (FRN) data. Sixty-six paid subjects were randomly assigned to the Neutral-Neutral (NN), Angry-Neutral (AN), and Happy-Neutral (HN) groups. A total of 960 trials were conducted. Subjects in each group were randomly exposed to half trials of the pre-determined emotional faces and another half of the neutral faces before choosing between two cards drawn from two decks with different assigned reward probabilities. Trial-by-trial data were fit with a standard reinforcement learni

SUBMITTER: Liu HH 

PROVIDER: S-EPMC4434921 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature