Task-Specific Neural Representations of Generalizable Metacognitive Control Signals in the Human Dorsal Anterior...

Area of Science:

• Neuroscience
• Cognitive Psychology
• Decision Science

Background:

• The dorsal anterior cingulate cortex (dACC) is crucial for cognitive control, uniformly representing task-generic control signal intensities.
• It remains unclear if dACC also encodes task-specific control signal identities and how these are organized.
• Decision uncertainty, an internally generated metacognitive signal, guides behavior without external feedback.

Purpose of the Study:

• To investigate neural representations of decision uncertainty in the dACC across diverse decision-making tasks.
• To determine if dACC encodes both task-generic and task-specific control information.
• To explore the organization of identity and intensity information within dACC activity.

Main Methods:

• Functional magnetic resonance imaging (fMRI) was used to analyze trial-by-trial univariate and multivariate activity in the dACC.
• Three decision-making tasks from perception, rule-based inference, and memory domains were employed.
• Behavioral experiments were conducted to confirm the impact of neural representation organization.

Main Results:

• The dACC commonly represented decision uncertainty across all three decision-making tasks.
• Multivariate fMRI revealed a mosaic neural representation of decision uncertainty in the dACC.
• Identity and intensity information were separately encoded in distinct components of dACC activity.

Conclusions:

• The dACC exhibits a mosaic organization, separately representing decision uncertainty's identity and intensity.
• This organization supports both task-generic and task-specific metacognitive control signals.
• Interference effects suggest distinct processing of intensity versus identity information across tasks.