The bilateral Right Cerebrum.Frontal Lobe.Sub-Gyral.Gray Matter.Brodmann area 8 corresponds primarily to the dorsal portion of the superior frontal gyrus and adjacent subgyral frontal cortex, forming part of the premotor and frontal eye fields in the Talairach 1 mm Atlas. This region is cytoarchitectonically defined by its granular frontal cortex organization and is implicated in higher-order motor planning, voluntary saccadic eye movements, and aspects of attention and working memory control, including the preparation and selection of goal-directed actions. Functionally, Brodmann area 8 participates in frontoparietal networks that integrate sensory input with motor output, contributing to decision-making processes related to movement and gaze orientation, as well as cognitive control over complex, sequential behaviors. Brodmann area 8
The bilateral right frontal sub-gyral gray matter in Brodmann area 8 (BA8), encompassing portions of the dorsolateral prefrontal and frontal eye fields, has been repeatedly implicated in genetic and genomic studies linking frontal morphology, connectivity, and function to neuropsychiatric and cognitive traits. Large-scale GWAS of cortical thickness and surface area (e.g., ENIGMA, UK Biobank) have identified common variants in genes related to neurodevelopment, synaptic organization, and axon guidance—such as MIR137, TCF4, GRIN2B, and CNTNAP2—that influence frontal lobe structure, including superior and middle frontal regions overlapping BA8. Polygenic risk scores for schizophrenia, bipolar disorder, major depressive disorder, and ADHD show associations with altered volume and cortical thickness in dorsolateral prefrontal regions that extend into BA8, suggesting that distributed genetic liability for these disorders partly manifests via frontal microstructural changes. BA8’s role in cognitive control, working memory, and eye-movement planning aligns with GWAS findings that link frontal structural and functional variation to general cognitive ability, educational attainment, and risk-taking behavior, with loci in genes such as FOXP2, ROBO1/2, and DRD2 contributing to individual differences in executive function networks that include this area. Additionally, imaging-genetics studies demonstrate that APOE, BDNF (particularly the Val66Met polymorphism), and COMT variants affect frontal activation and connectivity patterns during tasks requiring executive control and sustained attention, implicating BA8 in genetically influenced variability in higher-order cognition and vulnerability to disorders involving prefrontal circuit dysfunction.
Overview generated by GPT-4o (2026).
Region ID: 1028
Hemisphere: bilateral
Atlas: Talairach labels 1mm
Full Quality Version: Download MP4
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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