Domain-general signals in the cingulo-opercular network for visuospatial attention and episodic memory

Area of Science:

• Neuroscience
• Cognitive Neuroscience
• Cognitive Psychology

Background:

• The cingulo-opercular network (CON) is a brain region hypothesized to be involved in cognitive control.
• Understanding the CON's precise functional role and its interactions with other large-scale brain networks is crucial for advancing cognitive neuroscience.

Purpose of the Study:

• To investigate the functional properties and generality of the cingulo-opercular network (CON) in cognitive control.
• To examine the CON's sustained activity patterns and its flexible functional connectivity with other brain networks during different cognitive tasks.

Main Methods:

• Functional magnetic resonance imaging (fMRI) was used to analyze task-evoked activity during perceptual and episodic memory search tasks.
• Functional connectivity and multivariate clustering analyses were employed to delineate the CON's unique characteristics and interactions.

Main Results:

• The CON exhibited sustained activation across all phases of both perceptual and memory search tasks, indicating domain-general involvement.
• Functional connectivity analyses revealed flexible coupling of the CON with the dorsal attention network (DAN) during perceptual tasks and the default mode network (DMN) during memory tasks.
• Multivariate clustering distinguished the CON from other frontoparietal regions, suggesting a unique functional fingerprint.

Conclusions:

• The CON's sustained activity and flexible interactions support its role as a broad cognitive control and task-general network.
• These findings contribute to a deeper understanding of the neural mechanisms underlying cognitive control and information processing.