Confidence control for efficient behaviour in dynamic environments

Tarryn Balsdon () and Marios G. Philiastides
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Tarryn Balsdon: University of Glasgow
Marios G. Philiastides: University of Glasgow

Nature Communications, 2024, vol. 15, issue 1, 1-12

Abstract: Abstract Signatures of confidence emerge during decision-making, implying confidence may be of functional importance to decision processes themselves. We formulate an extension of sequential sampling models of decision-making in which confidence is used online to actively moderate the quality and quantity of evidence accumulated for decisions. The benefit of this model is that it can respond to dynamic changes in sensory evidence quality. We highlight this feature by designing a dynamic sensory environment where evidence quality can be smoothly adapted within the timeframe of a single decision. Our model with confidence control offers a superior description of human behaviour in this environment, compared to sequential sampling models without confidence control. Using multivariate decoding of electroencephalography (EEG), we uncover EEG correlates of the model’s latent processes, and show stronger EEG-derived confidence control is associated with faster, more accurate decisions. These results support a neurobiologically plausible framework featuring confidence as an active control mechanism for improving behavioural efficiency.

Date: 2024
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DOI: 10.1038/s41467-024-53312-3

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