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Cortical feedback to V1 and V2 contains unique information about high-level scene structure

View ORCID ProfileAndrew T. Morgan, Lucy S. Petro, View ORCID ProfileLars Muckli
doi: https://doi.org/10.1101/041186
Andrew T. Morgan
1Centre for Cognitive Neuroimaging, Institute of Neuroscience and Psychology, University of Glasgow, Glasgow G12 8QB, United Kingdom
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Lucy S. Petro
1Centre for Cognitive Neuroimaging, Institute of Neuroscience and Psychology, University of Glasgow, Glasgow G12 8QB, United Kingdom
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Lars Muckli
1Centre for Cognitive Neuroimaging, Institute of Neuroscience and Psychology, University of Glasgow, Glasgow G12 8QB, United Kingdom
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  • For correspondence: Lars.Muckli@glasgow.ac.uk
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Abstract

Early visual cortical neurons receive highly selective feedforward input, which is amplified or disamplified by contextual feedback and lateral connections. A significant challenge for systems neuroscience is to measure the feature space that drives these feedback channels. We occluded visual scenes and measured non-feedforward stimulated subregions of V1 and V2 using fMRI and multi-voxel pattern analyses. We found that response patterns in these subregions contain two high-level scene features, category and depth information. Responses in non-feedforward stimulated V1 and V2 differed from each other, suggesting that feedback to these two areas has unique information content. Further, we reveal that computational models of visual processing inadequately describe early visual cortex because they do not account for the brain’s internal modeling of the world.

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The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC-ND 4.0 International license.
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Posted February 24, 2016.
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Cortical feedback to V1 and V2 contains unique information about high-level scene structure
Andrew T. Morgan, Lucy S. Petro, Lars Muckli
bioRxiv 041186; doi: https://doi.org/10.1101/041186
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Cortical feedback to V1 and V2 contains unique information about high-level scene structure
Andrew T. Morgan, Lucy S. Petro, Lars Muckli
bioRxiv 041186; doi: https://doi.org/10.1101/041186

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