Connectivity between ventromedial prefrontal cortex and posterior superior temporal sulcus

Area of Science:

• Neuroscience
• Cognitive Psychology
• Neuroimaging

Background:

• The Self Attention Network (SAN) framework offers a model for neurocognitive interactions between self-bias and attention.
• Existing evidence supports aspects of the SAN model in explaining these phenomena.

Purpose of the Study:

• To critically evaluate the current Self Attention Network (SAN) model.
• To identify areas requiring further investigation regarding the network's functional and effective connectivity.
• To refine understanding of the ventro-medial prefrontal cortex's control over the posterior superior temporal sulcus.

Main Methods:

• Review and analysis of existing neuroimaging and neuropsychological data.
• Theoretical examination of proposed neural connections within the SAN framework.

Main Results:

• The SAN model adequately explains a portion of the evidence on self-bias and attention.
• Simple excitatory connections, as proposed by the SAN model between specific brain regions, are insufficient.
• Neuroimaging and neuropsychological data present limitations to the current SAN model's proposed connectivity.

Conclusions:

• More research is essential to refine the understanding of effective and functional connectivity within the SAN.
• The precise nature of control exerted by the ventro-medial prefrontal cortex over the posterior superior temporal sulcus requires further elucidation.
• The SAN model may need revision to better account for observed neuropsychological dissociations and neuroimaging findings.