Neurocomputational mechanisms involved in adaptation to fluctuating intentions of others.

ABSTRACT: Humans frequently interact with agents whose intentions can fluctuate between competition and cooperation over time. It is unclear how the brain adapts to fluctuating intentions of others when the nature of the interactions (to cooperate or compete) is not explicitly and truthfully signaled. Here, we use model-based fMRI and a task in which participants thought they were playing with another player. In fact, they played with an algorithm that alternated without signaling between cooperative and competitive strategies. We show that a neurocomputational mechanism with arbitration between competitive and cooperative experts outperforms other learning models in predicting choice behavior. At the brain level, the fMRI results show that the ventral striatum and ventromedial prefrontal cortex tra

SUBMITTER: Philippe R 

PROVIDER: S-EPMC11014977 | biostudies-literature | 2024 Apr

REPOSITORIES: biostudies-literature