Human VMPFC encodes early signatures of confidence in perceptual decisions.

ABSTRACT: Choice confidence, an individual's internal estimate of judgment accuracy, plays a critical role in adaptive behaviour, yet its neural representations during decision formation remain underexplored. Here, we recorded simultaneous EEG-fMRI while participants performed a direction discrimination task and rated their confidence on each trial. Using multivariate single-trial discriminant analysis of the EEG, we identified a stimulus-independent component encoding confidence, which appeared prior to subjects' explicit choice and confidence report, and was consistent with a confidence measure predicted by an accumulation-to-bound model of decision-making. Importantly, trial-to-trial variability in this electrophysiologically-derived confidence signal was uniquely associated with fMRI responses i

SUBMITTER: Gherman S 

PROVIDER: S-EPMC6199131 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature