The bilateral Right Cerebrum.Frontal Lobe.Medial Frontal Gyrus.Gray Matter, as defined in the Talairach 1 mm atlas, corresponds largely to medial portions of the superior frontal gyrus on the right side, extending along the medial wall of the frontal lobe anterior to the supplementary motor area. This region participates in higher-order executive functions, including decision-making, attention control, and aspects of working memory, as well as in motivation and the regulation of goal-directed behavior. It has strong connections with other prefrontal regions, the anterior cingulate cortex, and subcortical structures such as the basal ganglia, supporting roles in action planning, performance monitoring, and the integration of cognitive and emotional information. There is no direct link for “medial frontal gyrus,” but a closely related structure is the Superior frontal gyrus.
The medial frontal gyrus gray matter in the right frontal lobe has been implicated in multiple genetic and GWAS findings, largely via imaging genetics and neuropsychiatric studies rather than region-specific single variants. Common variants in genes affecting synaptic function, neurodevelopment, and myelination (such as COMT, BDNF, DISC1, and genes in glutamatergic and dopaminergic pathways) have been associated with volumetric and cortical thickness variation in medial prefrontal and anterior cingulate territories that overlap the medial frontal gyrus. Large-scale ENIGMA and UK Biobank GWAS have identified polygenic influences on frontal lobe and medial prefrontal gray matter measures, with aggregate polygenic scores for schizophrenia, major depressive disorder, bipolar disorder, and attention-deficit/hyperactivity disorder showing associations with reduced or altered medial frontal morphology and connectivity. Risk loci for schizophrenia (e.g., within the MHC region and complement pathway genes like C4), autism spectrum disorder, and depression have been linked to altered medial prefrontal structure or function in intermediate-phenotype analyses, while genes involved in default mode and executive-control network architecture influence individual differences in this region’s gray matter and resting-state activity. Overall, genetic effects on the bilateral medial frontal gyrus appear highly polygenic and pleiotropic, contributing to vulnerability for mood, psychotic, and obsessive–compulsive spectrum disorders, as well as traits such as neuroticism, cognitive control, and response inhibition, rather than being driven by single region-specific loci.
Overview generated by GPT-4o (2026).
Region ID: 616
Hemisphere: bilateral
Atlas: Talairach labels 1mm
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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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