Cortical beta power reflects decision dynamics and uncovers multiple facets of post-error adaptation.

ABSTRACT: Adapting to errors quickly is essential for survival. Reaction slowing after errors is commonly observed but whether this slowing is adaptive or maladaptive is unclear. Here, we analyse a large dataset from a flanker task using two complementary approaches: a multistage drift-diffusion model, and the lateralisation of EEG beta power as a time-resolved index of choice formation. Fitted model parameters and their independently measured neuronal proxies in beta power convergently show a complex interplay of multiple mechanisms initiated after mistakes. Suppression of distracting evidence, response threshold increase, and reduction of evidence accumulation cause slow and accurate post-error responses. This data provides evidence for both adaptive control and maladaptive orienting after errors

SUBMITTER: Fischer AG 

PROVIDER: S-EPMC6261941 | biostudies-literature | 2018 Nov

REPOSITORIES: biostudies-literature