The bilateral GM Visual cortex V2 BA18 R region, as defined in the Juelich maxprob thr25 2mm atlas, corresponds to the right-hemispheric gray matter of Brodmann area 18, also known as secondary visual cortex (V2). This area lies adjacent to the primary visual cortex (V1, BA17) in the occipital lobe and participates in early-stage visual processing, including contour integration, binocular disparity, spatial orientation, and the integration of color and motion features derived from V1. Neurons in BA18/V2 show modular organization with distinct response properties, contributing to parallel visual pathways (e.g., dorsal and ventral streams) that support higher-order functions such as object recognition and visuospatial perception. There is no direct link for “Bilateral GM Visual cortex V2 BA18 R”; a closely related structure is Visual area V2.
The bilateral GM visual cortex V2 (BA18, right hemisphere) in the Juelich maxprob thr25 2mm atlas is part of the secondary visual cortex implicated in basic visual processing, and genetic associations are generally reported for broader occipital or visual cortical regions rather than BA18 specifically. Large neuroimaging GWAS consortia (e.g., ENIGMA, UK Biobank) have identified common variants in genes such as MCPH1, THBS1, CENPW, and others associated with occipital cortical thickness, surface area, or volume, which likely encompass V2/BA18, while polygenic scores for educational attainment, intelligence, and schizophrenia show distributed effects on visual cortical structures. Visual cortex measures, including BA18-adjacent regions, have been linked to genetic risk for neuropsychiatric disorders (schizophrenia, bipolar disorder, major depression, autism spectrum disorder) via imaging–genetics and transcriptomic studies that highlight convergence of synaptic, neurodevelopmental, and glutamatergic genes, but these effects are generally nonspecific across multiple cortical areas. In addition, GWAS of functional visual traits, such as visual acuity and refractive error, highlight genes involved in retinal development and synaptic transmission (e.g., GJD2, RORB) whose broad visual system impact may extend to V2 activity, though direct, fine-grained genetic associations with the BA18 R parcel in the Juelich atlas remain limited, with most findings reflecting polygenic influences on global or regional occipital morphology and visual processing networks rather than a uniquely defined genetic signature for this specific region.
Overview generated by GPT-4o (2026).
Region ID: 84
Hemisphere: bilateral
Atlas: Juelich maxprob thr25 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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