Confidence Leak in Perceptual Decision Making.

Area of Science:

• Cognitive Neuroscience
• Metacognition Research
• Neuroscience

Background:

• The brain leverages environmental stability through continuity fields, influencing current perception based on recent visual input.
• The existence of similar continuity mechanisms at the metacognitive level remains unexplored.

Purpose of the Study:

• To investigate whether metacognitive representations exhibit a continuity mechanism analogous to perceptual continuity fields.
• To identify the neural correlates and cognitive factors associated with intertask confidence modulation.

Main Methods:

• Three experiments were conducted to assess the "intertask confidence leak," where confidence in one trial affects confidence in the subsequent trial.
• Statistical analyses were performed to rule out alternative explanations like response priming or attentional fluctuations.
• Correlation analyses examined the relationship between confidence leak modulation, metacognitive capacity, and prefrontal cortex gray matter volume.

Main Results:

• A robust intertask confidence leak was consistently observed across experiments.
• This confidence leak was independent of response priming and attentional fluctuations.
• Enhanced ability to modulate confidence leak correlated with higher metacognitive capacity and greater prefrontal cortex gray matter volume.

Conclusions:

• The findings demonstrate a novel metacognitive mechanism involving an "intertask confidence leak."
• This mechanism is mediated by prefrontal cortex regions and linked to Bayesian inference principles for estimating perceptual signal strength.
• The study suggests that metacognitive continuity plays a role in stable environments, influencing subjective confidence.