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Poster Session B: Wednesday, August 13, 1:00 – 4:00 pm, de Brug & E‑Hall

Audiovisual Integration Follows Different Rules for Perceptual and Metacognitive Decisions

Porte Perrine¹, Matan Mazor², Louise Goupil, Nathan Faivre³; ¹Laboratoire de Psychologie et NeuroCognition, ²University of Oxford, ³CNRS

Presenter: Porte Perrine

Being confident in our inferences about the presence or absence of multisensory stimuli is crucial in many contexts. We investigated how humans form both amodal and modality-specific confidence judgments following the detection of audiovisual stimuli. To model this, we extended a Bayesian evidence accumulation framework. The model accurately reproduced amodal detection and modality-specific confidence judgments, despite being fitted only to amodal decisions and decision times. However, it failed to capture amodal confidence. Overall, this suggests that different integration rules apply to perceptual and metacognitive decisions.

Topic Area: Predictive Processing & Cognitive Control

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