Bilateral Left Cerebrum.Frontal Lobe.Medial Frontal Gyrus.Gray Matter.Brodmann area 8 corresponds to a dorsal frontal cortical region situated anterior to the premotor cortex and superior to the frontal eye fields, largely involved in higher-order oculomotor control, attention, and executive functions. In the Talairach 2 mm Atlas, this area encompasses gray matter of the medial frontal gyrus in both hemispheres, contributing to voluntary eye movement planning, spatial orientation, and aspects of cognitive control such as decision-making, response selection, and working memory processes that integrate visual and motor information. Brodmann area 8 is also implicated in the regulation of exploratory behavior and may participate in the integration of internal goals with externally guided actions within frontal cortical networks. There is no direct link for this exact composite label; a closely related structure is Brodmann area 8.
The bilateral medial frontal gyrus gray matter in Brodmann area 8 (BA8), a core node of the dorsal frontal executive and oculomotor control network, has been implicated in multiple genetic and GWAS-based associations, although most findings reference functional networks rather than this precise Talairach-defined parcel. Large-scale neuroimaging GWAS (e.g., ENIGMA, UK Biobank) have identified numerous common variants influencing frontal cortical thickness and surface area, including loci in or near genes such as CENPW, HMGA2, TBR1, and various chromatin regulators, with distributed effects that often encompass medial frontal regions including BA8. BA8 activity and structure have been repeatedly linked to cognitive control, working memory, and response inhibition, and polygenic scores for educational attainment and general cognitive ability show associations with medial frontal morphology and activation patterns. In psychiatric genetics, medial frontal and BA8 structural or functional alterations have been reported in schizophrenia, bipolar disorder, major depressive disorder, ADHD, and OCD, and GWAS-derived polygenic risk scores for these disorders correlate with frontal cortical measures, though the genetic effects are highly polygenic and not specific to BA8 alone. Genes influencing synaptic plasticity and glutamatergic signaling (e.g., GRIN2A, CACNA1C) and those involved in neurodevelopmental transcriptional regulation have been associated with network-level changes impacting BA8 in tasks requiring executive control and eye movement planning. Overall, genetic influences on BA8 gray matter appear broadly shared with other frontal regions, reflecting distributed polygenic architecture rather than region-specific single-gene effects, and its involvement in cognitive and psychiatric traits typically emerges through large-scale imaging-genetic analyses of frontal control networks.
Overview generated by GPT-4o (2026).
Region ID: 1033
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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