The bilateral GM Inferior parietal lobule PFt L, as defined in the Juelich maxprob thr25 1mm atlas, corresponds to a cytoarchitectonically characterized subregion of the inferior parietal lobule located in the left hemisphere, implicated in multimodal sensory integration, higher-order somatosensory processing, and aspects of language-related and praxis functions. This PFt subregion lies within the posterior parietal cortex and participates in networks supporting the integration of visual, auditory, and somatosensory information, contributing to spatial attention, body-related representations, and the transformation of sensory input into motor plans. At the microstructural level, PFt exhibits distinct laminar and receptor-architectonic features compared with neighboring inferior parietal areas (e.g., PF, PFm, PGa, PGp), reflecting functional specialization within the parietal association cortex. There is no direct Wikipedia article for PFt; a related structure is the Inferior parietal lobule.
The bilateral GM Inferior parietal lobule PFt (left hemisphere; Juelich maxprob thr25 1 mm) is part of the posterior parietal cortex implicated in multisensory integration, attention, language, and social cognition, and although few GWAS target PFt specifically, genetic studies of cortical structure and parietal morphology implicate common variants in genes affecting neurodevelopment (e.g., microtubule and synaptic genes such as MAPT, BDNF, and others identified in large ENIGMA and UK Biobank imaging‑genetics analyses). GWAS of regional cortical thickness and surface area have repeatedly highlighted parietal lobule measures as heritable endophenotypes associated with polygenic risk for schizophrenia, major depressive disorder, ADHD, and Alzheimer’s disease, with risk loci in pathways for synaptic plasticity, immune regulation (e.g., MHC region), and axon guidance influencing parietal structural variation. Functional imaging‑genetics work links dopaminergic and glutamatergic gene variants to altered activation of inferior parietal regions during attention, working memory, and language tasks, while social cognition and empathy GWAS and candidate‑gene studies (including oxytocin pathway genes) show associations with inferior parietal activation patterns and connectivity. Parietal lobule structure and function, including PFt, have further been associated with genetic risk for autism spectrum conditions (genes involved in cortical patterning and synapse formation), dyslexia and other language‑related traits, and variance in general cognitive ability, suggesting that this region is a convergent neural substrate where polygenic influences on cognition, psychiatric vulnerability, and neurodegenerative risk are expressed through its cytoarchitectonic specialization and large‑scale network integration.
Overview generated by GPT-4o (2026).
Region ID: 35
Hemisphere: bilateral
Atlas: Juelich maxprob thr25 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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