@article {10.7554/eLife.11946, article_type = {journal}, title = {Neural evidence accumulation persists after choice to inform metacognitive judgments}, author = {Murphy, Peter R and Robertson, Ian H and Harty, Siobhán and O'Connell, Redmond G}, editor = {Frank, Michael J}, volume = 4, year = 2015, month = {dec}, pub_date = {2015-12-19}, pages = {e11946}, citation = {eLife 2015;4:e11946}, doi = {10.7554/eLife.11946}, url = {https://doi.org/10.7554/eLife.11946}, abstract = {The ability to revise one’s certainty or confidence in a preceding choice is a critical feature of adaptive decision-making but the neural mechanisms underpinning this metacognitive process have yet to be characterized. In the present study, we demonstrate that the same build-to-threshold decision variable signal that triggers an initial choice continues to evolve after commitment, and determines the timing and accuracy of self-initiated error detection reports by selectively representing accumulated evidence that the preceding choice was incorrect. We also show that a peri-choice signal generated in medial frontal cortex provides a source of input to this post-decision accumulation process, indicating that metacognitive judgments are not solely based on the accumulation of feedforward sensory evidence. These findings impart novel insights into the generative mechanisms of metacognition.}, keywords = {metacognition, error detection, decision-making, diffusion model, EEG}, journal = {eLife}, issn = {2050-084X}, publisher = {eLife Sciences Publications, Ltd}, }