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- W4386446299 abstract "Abstract Metacognitive evaluations of confidence provide an estimate of decision accuracy that could guide learning in the absence of explicit feedback. We examine how humans might learn from this implicit feedback in direct comparison with that of explicit feedback, using simultaneous EEG-fMRI. Participants performed a motion direction discrimination task where stimulus difficulty was increased to maintain performance, with intermixed explicit- and no-feedback trials. We isolate single-trial estimates of post-decision confidence using EEG decoding, and find these neural signatures re-emerge at the time of feedback together with separable signatures of explicit feedback. We identified these signatures of implicit versus explicit feedback along a dorsal-ventral gradient in the striatum, a finding uniquely enabled by an EEG-fMRI fusion. These two signals are then integrated into an aggregate representation in the external globus pallidus, which broadcasts updates to improve cortical decision processing via the thalamus and insular cortex, irrespective of the source of feedback." @default.
- W4386446299 created "2023-09-06" @default.
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- W4386446299 date "2023-09-05" @default.
- W4386446299 modified "2023-10-16" @default.
- W4386446299 title "Distinct basal ganglia contributions to learning from implicit and explicit value signals in perceptual decision-making" @default.
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- W4386446299 doi "https://doi.org/10.1101/2023.09.05.556317" @default.
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