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Unraveling the mesoscale resting-state functional connectivity of ocular dominance columns in humans using high-resolution functional MRI
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Unraveling the mesoscale resting-state functional connectivity of ocular dominance columns in humans using high-resolution functional MRI
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Unraveling the mesoscale resting-state functional connectivity of ocular dominance columns in humans using high-resolution functional MRI
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Journal Article
Unraveling the mesoscale resting-state functional connectivity of ocular dominance columns in humans using high-resolution functional MRI
2025
Overview
Despite their importance for visual perception, functional connectivity between ocular dominance columns in human primary visual cortex remains largely unknown. Using high-resolution functional MRI, we localize ocular dominance columns and assess their resting-state functional connectivity in 12 human adults. Consistent with anatomical studies in animals, we find stronger connectivity in middle compared to deep and superficial cortical depths and selectively stronger connectivity between columns with alike compared to unalike ocular polarity. Beyond what was known from animal models, and consistent with human perceptual biases, intra- and interhemispheric connectivity is stronger in peripheral (compared to central) and in dorsal (compared to ventral) subregions. Lastly, connectivity patterns correlate with ocular dominance column maps, suggesting that they can be predicted from connectivity patterns within primary visual cortex. These results highlight the heterogeneity in functional connectivity between ocular dominance columns across cortical depths and visual field representations, underscoring their likely association with perceptual features.
High-resolution fMRI uncovers stronger functional connectivity between alike ocular dominance columns in human V1, varying across depth and visual subfields, providing new insights into the mesoscale functional organization of the visual system.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
/ 59/57
/ Adult
/ Biomedical and Life Sciences
/ Dominance, Ocular - physiology
/ Female
/ Functional magnetic resonance imaging
/ Humans
/ Magnetic Resonance Imaging - methods
/ Male
/ Primary Visual Cortex - diagnostic imaging
/ Primary Visual Cortex - physiology
/ Visual Cortex - diagnostic imaging
