The Anterior Insula Tracks Behavioral Entropy during an Interpersonal Competitive Game.

ABSTRACT: In competitive situations, individuals need to adjust their behavioral strategy dynamically in response to their opponent's behavior. In the present study, we investigated the neural basis of how individuals adjust their strategy during a simple, competitive game of matching pennies. We used entropy as a behavioral index of randomness in decision-making, because maximizing randomness is thought to be an optimal strategy in the game, according to game theory. While undergoing functional magnetic resonance imaging (fMRI), subjects played matching pennies with either a human or computer opponent in each block, although in reality they played the game with the same computer algorithm under both conditions. The winning rate of each block was also manipulated. Both the opponent (human or compute

SUBMITTER: Takahashi H 

PROVIDER: S-EPMC4454696 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature