The bilateral Right Cerebrum.Frontal Lobe.Subcallosal Gyrus refers to a ventromedial frontal region located inferior to the genu of the corpus callosum and adjacent to the septal area, typically considered part of the medial orbitofrontal and limbic-associated frontal cortex. This region is implicated in affective regulation, reward processing, autonomic control, and the integration of visceral emotional states with higher-order decision making, and is often included within the broader ventromedial prefrontal and limbic network involved in mood and anxiety disorders. There is no direct link, but it is closely related to the Orbitofrontal cortex.
The subcallosal gyrus (part of the ventral medial prefrontal/limbic frontal region) has been repeatedly implicated in genetic and imaging-genetic studies of mood and affective disorders, particularly major depressive disorder (MDD) and treatment-resistant depression, where structural and functional alterations in this area show heritability and link to polygenic risk scores for MDD and related traits. Large-scale GWAS of brain structure and cortical thickness (e.g., ENIGMA and UK Biobank–based studies) have identified variants influencing medial and ventral prefrontal morphology, including loci near genes involved in neurodevelopment, synaptic function, and axon guidance (such as DCC, GRM3, and others), though these are typically reported at the level of broader frontal or cingulate regions rather than the subcallosal gyrus specifically. Imaging–genetics work in anxiety, bipolar disorder, and suicidality has associated risk alleles and polygenic risk scores with volumetric and connectivity changes in subcallosal/sgACC regions, supporting a genetically influenced role in emotion regulation and stress response circuits. Furthermore, genetic variants tied to antidepressant response and deep brain stimulation outcomes in treatment-resistant depression have been explored in relation to subcallosal cingulate targets, indicating that genetic background may modulate structural and functional properties of this region and thereby influence clinical trajectories, although robust, region-specific GWAS for the Talairach-defined subcallosal gyrus remain limited and findings are usually embedded within broader medial prefrontal or cingulate phenotypes.
Overview generated by GPT-4o (2026).
Region ID: 278
Hemisphere: bilateral
Atlas: Talairach labels 2mm
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Full Quality Version: Download MP4
Wali Sidiqyar*, Gaurav Rudravaram*, Elyssa M. McMaster, Trent M. Schwartz, Adam M. Saunders, Kurt G. Schilling, Bennett A. Landman "Introducing SPINS: A Shared Public Visualization Library of Neuroanatomical Structures." Medical Imaging with Deep Learning- short paper
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