Distinct functional connectivity associated with lateral versus medial rostral prefrontal cortex: a meta-analysis

Area of Science:

• Neuroscience
• Cognitive Neuroscience
• Neuroimaging

Background:

• Functional connectivity in the human brain can be assessed by analyzing co-activation patterns across neuroimaging experiments.
• The rostral prefrontal cortex (RoPFC), specifically Brodmann Area 10, is a key region for higher-order cognition.

Purpose of the Study:

• To investigate if distinct subregions within the RoPFC exhibit unique co-activation patterns with other brain regions.
• To explore the role of task type in modulating these functional connections.

Main Methods:

• A meta-analysis was conducted on 200 activation peaks within RoPFC and 1712 co-activations from 162 studies.
• The likelihood of simultaneous activation between RoPFC subregions and other brain areas was analyzed.

Main Results:

• Little evidence for connectivity differences along hemispheric, rostral/caudal, or superior/inferior axes within RoPFC.
• Significant differences were found between lateral and medial RoPFC connectivity.
• Lateral RoPFC co-activated with dorsal anterior cingulate, dorsolateral PFC, anterior insula, and lateral parietal cortex.
• Medial RoPFC co-activated with posterior cingulate, posterior superior temporal sulcus, and temporal pole.
• Task type influenced connectivity, with mentalizing tasks showing specific co-activation patterns.

Conclusions:

• RoPFC subregions, specifically lateral and medial parts, have distinct functional connectivity profiles.
• These findings align with primate anatomy and suggest dynamic changes in effective connectivity during cognitive tasks.