Timing of readiness potentials reflect a decision-making process in the human brain.

ABSTRACT: Decision-making in two-alternative forced choice tasks has several underlying components including stimulus encoding, perceptual categorization, response selection, and response execution. Sequential sampling models of decision-making are based on an evidence accumulation process to a decision boundary. Animal and human studies have focused on perceptual categorization and provide evidence linking brain signals in parietal cortex to the evidence accumulation process. In this exploratory study, we use a task where the dominant contribution to response time is response selection and model the response time data with the drift-diffusion model. EEG measurement during the task show that the Readiness Potential (RP) recorded over motor areas has timing consistent with the evidence accumulation p

SUBMITTER: Lui KK 

PROVIDER: S-EPMC8896820 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature