Cited by 207Neural and Behavioral Psychology StudiesDecision-Making and Behavioral EconomicsVisual perception and processing mechanisms

Distinct encoding of decision confidence in human medial prefrontal cortex

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Bang, Dan, Fleming, Stephen M.·2018·Proceedings of the National Academy of Sciences

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Abstract

Abstract Our confidence in a choice and the evidence pertaining to a choice appear to be inseparable. An emerging computational consensus is, however, that the brain should maintain separate estimates of these quantities for adaptive behavioural control. Here we devised a psychophysical task to decouple confidence in a perceptual decision from both the reliability of sensory evidence and the relation of such evidence with respect to a choice boundary. Using human fMRI, we found that an area in medial prefrontal cortex (perigenual anterior cingulate cortex, pgACC) tracked expected performance, an aggregate signature of decision confidence, whereas neural areas previously proposed to encode decision confidence instead tracked sensory reliability (posterior parietal cortex and ventral striatum) or boundary distance (pre-supplementary motor area). Supporting that information encoded by pgACC is central to a subjective sense of decision confidence, we show that pgACC activity does not simply co-vary with expected performance but is also linked to within-subject and between-subject variation in explicit confidence estimates. Our study is consistent with the proposal that the brain maintains choice-dependent and choice-independent estimates of certainty, and sheds light on why dysfunctional confidence often emerges following prefrontal lesions and/or degeneration. Significance Statement Recent computational models propose that our sense of confidence in a choice reflects an estimate of the probability that the choice is correct. However, it has proven difficult to experimentally separate decision confidence from its component parts, such as our certainty about perceptual evidence or choice requirements. Here we devised a task to dissociate these quantities and isolate a distinct encoding of decision confidence in the medial prefrontal cortex of the human brain. We show that activity in this area not only tracks expected performance on a task but is also related to both within-subject and between-subject variation in a subjective sense of confidence. Our study illuminates why dysfunctional confidence often emerges following damage to prefrontal cortex.

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  • In humans, sensory uncertainty (motion coherence) is related to activity in extrastriate visual and parietal cortex (MT+ and bilateral intraparietal sulcus), whereas signatures of propositional confidence are observed in perigenual anterior cingulate cortex (pgACC), part of ventromedial prefrontal cortex (vmPFC).

    “Whereas sensory uncertainty (motion coherence) was related to activity in extrastriate visual and parietal cortex (notably, areas MT+ and bilateral intraparietal sulcus, a human homologue of LIP), signatures of propositional confidence were instead observed within perigenual anterior cingulate cortex (pgACC), part of the ventromedial prefrontal cortex (vmPFC).”

    From Metacognition and Confidence: A Review and Synthesis (2024) · cites this paper as Bang & Fleming 2018

  • Early confidence-related signals are seen in vmPFC (in a pgACC region similar to that identified by Bang & Fleming), whereas later judgment-related activation is seen in lateral frontopolar cortex.

    “Early confidence-related signals were seen in vmPFC [in a pgACC region similar to the one identified by Bang & Fleming (2018)], whereas later judgment-related activation was seen in lateral frontopolar cortex.”

    From Metacognition and Confidence: A Review and Synthesis (2024) · cites this paper as Bang & Fleming 2018

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Research works printed but not linked: 3

  1. Vandekerckhove J, Tuerlinckx F (2008) Diffusion model analysis with MATLAB: A DMAT primer. Behav Res Methods 40(1):61-72.
  2. Josephs O, Howseman AM, Friston KJ, Turner R (1997) Physiological noise modelling for multi- slice EPI fMRI SPM. Proceedings of the 5th Annual Meeting of ISMRM (Vancouver, Canada), p 1682.
  3. Grinband J, Wager TD, Lindquist M, Ferrera VP, Hirsch J (2008) Detection of time-varying signals in event-related fMRI designs. Neuroimage 43(3):509-520.

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Authors
Bang, D., & Fleming, S. M.
Affiliations
Wellcome Centre for Human Neuroimaging (GB)
Venue
Proceedings of the National Academy of Sciences
Published
2018-05-21
Volume
115
Issue
23
Pages
6082-6087
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2803340568
Cited by
207
References
48
Citations by year
2026: 17 · 2025: 24 · 2024: 22 · 2023: 25 · 2022: 32 · 2021: 27 · 2020: 36 · 2019: 15 · 2018: 9
FWCI
12.95
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by-nc-nd)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • UCL Discovery (University College London) (submittedVersion)
  • Max Planck Digital Library (submittedVersion)
  • MPG.PuRe (Max Planck Society) (submittedVersion)
Funders
Wellcome (203147/Z/16/Z)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
  • Social Sciences › Decision Sciences › General Decision Sciences › Decision-Making and Behavioral Economics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Visual perception and processing mechanisms
Keywords
decision confidence, medial prefrontal cortex, pregenual anterior cingulate cortex, perceptual decision making, expected performance, posterior parietal cortex, ventral striatum, pre-supplementary motor area, confidence estimation, prefrontal lesions
MeSH terms
Adult, Brain, Brain Mapping, Choice Behavior, Decision Making, Female, Gyrus Cinguli, Humans, Magnetic Resonance Imaging, Male, Reproducibility of Results, Prefrontal Cortex

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