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Perceptual confidence relies on visual evidence, but how we access this evidence depends on task level. High-level visual tasks maintain confidence longer than low-level ones, especially when visual stimuli degrade.

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Area of Science:

  • Cognitive Neuroscience
  • Visual Perception
  • Metacognition

Background:

  • Perceptual confidence is linked to metacognitive evaluation of decision evidence.
  • The hierarchical organization of the visual cortex may influence metacognitive access to perceptual information.

Purpose of the Study:

  • To investigate if metacognitive access to perceptual evidence is constrained by visual cortex hierarchy.
  • To examine how task level (high-level vs. low-level) affects confidence judgments.
  • To determine the role of post-decisional processing time and visual masking on confidence.

Main Methods:

  • Human observers performed high-level and low-level visual tasks on identical stimuli.
  • Varied the time between stimulus presentation and response cue.
  • Introduced backward masking to degrade visual stimuli.

Main Results:

  • Confidence judgments were influenced by task level (high-level vs. low-level).
  • Low-level confidence degraded with increased decision-response time and backward masking.
  • High-level confidence was robust to backward masking and improved with additional time.

Conclusions:

  • Metacognitive access to perceptual evidence is modulated by the hierarchical level of visual processing.
  • Confidence relies on persistent, post-decisional internal representations, with higher-level representations being more stable over time.