Bilateral Left Cerebrum.Frontal Lobe.Superior Frontal Gyrus.Gray Matter.Brodmann area 8 corresponds to a frontal cortical region situated anterior to the premotor cortex and dorsal to the middle frontal gyrus, extending across both hemispheres in the Talairach 2 mm atlas. Brodmann area 8 is functionally associated with higher-order motor planning, executive control, and particularly the control of voluntary eye movements and saccadic planning, integrating visual, spatial, and cognitive information for goal-directed orienting of attention. Its gray matter in the superior frontal gyrus participates in aspects of working memory, decision making, and the regulation of behavioral responses, often interacting with prefrontal and parietal networks involved in cognitive control and oculomotor functions. Brodmann area 8
The bilateral Left Cerebrum Frontal Lobe Superior Frontal Gyrus gray matter in Brodmann area 8 (BA8), a core dorsolateral prefrontal cortex region implicated in executive control and oculomotor function, has been repeatedly implicated in genetic imaging and GWAS studies of brain structure and cognition, although most findings reference the superior frontal gyrus or frontal pole more broadly rather than BA8 at Talairach 2 mm resolution. Large-scale GWAS of cortical thickness and surface area (e.g., ENIGMA and UK Biobank) have identified common variants in genes such as HMGA2, MIR137, KIAA0586, and others associated with superior frontal cortical morphology, which overlaps BA8, and these structural differences frequently mediate genetic effects on general cognitive ability, working memory, and educational attainment. Polygenic risk scores for schizophrenia, bipolar disorder, and major depressive disorder are associated with altered gray matter volume and cortical thickness in superior frontal and BA8-adjacent regions, suggesting a genetic contribution to vulnerability via prefrontal circuitry; specific risk loci in CACNA1C, ZNF804A, and MIR137, among others, have been linked to functional alterations during cognitive control tasks that engage BA8. ADHD- and autism-related risk variants and polygenic scores also correlate with atypical development and functional activation in superior frontal areas, particularly in tasks requiring response inhibition and flexible attention, consistent with BA8’s role in top-down control. GWAS of traits such as cognitive performance, impulsivity, and risk-taking have identified frontal-enriched expression patterns and imaging endophenotypes involving BA8/superior frontal gyrus, supporting a convergence of genetic influences on higher-order control processes; however, fine-grained genetic associations specific to Talairach-defined BA8 gray matter remain indirect, inferred through broader superior frontal and dorsolateral prefrontal imaging-genetics rather than region-exclusive loci.
Overview generated by GPT-4o (2026).
Region ID: 1035
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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