The neural systems for perceptual updating.

Area of Science:

• Neuroscience
• Cognitive Neuroscience
• Decision Making

Background:

• Humans must adapt to changing environmental information.
• Previous work identified a network active during gradual perceptual updates.

Purpose of the Study:

• Investigate if brain activations reflect proactive updating decisions or perceptual uncertainty.
• Differentiate between uncertainty-driven and surprise-based updating mechanisms.

Main Methods:

• Utilized a picture morphing task with gradual and abrupt changes.
• Introduced conditions to control for perceptual uncertainty and differentiate updating types.
• Employed functional neuroimaging to observe brain activity.

Main Results:

• Confirmed robust activation in the anterior insula and anterior cingulate cortex (ACC) across all conditions.
• Found increased activation in the mid-cingulate cortex, cuneus, and right temporoparietal junction (TPJ) when participants were uncertain.
• Identified a network including the dorsal ACC associated with proactive updating decisions.

Conclusions:

• A common neural network supports all perceptual updating.
• Distinct networks are engaged for perceptual uncertainty and proactive/reactive updating.
• Findings elucidate the neural basis of adaptive decision-making in dynamic environments.