The visual white matter connecting human area prostriata and the thalamus is retinotopically organized.

Brain Structure & Function
Jan W KurzawskiFranco Pestilli

Abstract

The human visual system is capable of processing visual information from fovea to the far peripheral visual field. Recent fMRI studies have shown a full and detailed retinotopic map in area prostriata, located ventro-dorsally and anterior to the calcarine sulcus along the parieto-occipital sulcus with strong preference for peripheral and wide-field stimulation. Here, we report the anatomical pattern of white matter connections between area prostriata and the thalamus encompassing the lateral geniculate nucleus (LGN). To this end, we developed and utilized an automated pipeline comprising a series of Apps that run openly on the cloud computing platform brainlife.io to analyse 139 subjects of the Human Connectome Project (HCP). We observe a continuous and extended bundle of white matter fibers from which two subcomponents can be extracted: one passing ventrally parallel to the optic radiations (OR) and another passing dorsally circumventing the lateral ventricle. Interestingly, the loop travelling dorsally connects the thalamus with the central visual field representation of prostriata located anteriorly, while the other loop travelling more ventrally connects the LGN with the more peripheral visual field representation located p...Continue Reading

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Citations

Dec 1, 2021·Brain Structure & Function·Mareike GrotheerKalanit Grill-Spector

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Software Mentioned

HCP
mrtrix3
MSM
Matlab
Prostriata
mrTrix
io
FreeSurfer
all
mri

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