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Alpha-frequency feedback to early visual cortex orchestrates coherent naturalistic vision

During naturalistic vision, the brain generates coherent percepts by integrating sensory inputs scattered across the visual field. Here, we asked whether this integration process is mediated by rhythmic cortical feedback. In electroencephalography (EEG) and functional magnetic resonance imaging (fMR...

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Autores principales: Chen, Lixiang, Cichy, Radoslaw M., Kaiser, Daniel
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Association for the Advancement of Science 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10637741/
https://www.ncbi.nlm.nih.gov/pubmed/37948520
http://dx.doi.org/10.1126/sciadv.adi2321
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author Chen, Lixiang
Cichy, Radoslaw M.
Kaiser, Daniel
author_facet Chen, Lixiang
Cichy, Radoslaw M.
Kaiser, Daniel
author_sort Chen, Lixiang
collection PubMed
description During naturalistic vision, the brain generates coherent percepts by integrating sensory inputs scattered across the visual field. Here, we asked whether this integration process is mediated by rhythmic cortical feedback. In electroencephalography (EEG) and functional magnetic resonance imaging (fMRI) experiments, we experimentally manipulated integrative processing by changing the spatiotemporal coherence of naturalistic videos presented across visual hemifields. Our EEG data revealed that information about incoherent videos is coded in feedforward-related gamma activity while information about coherent videos is coded in feedback-related alpha activity, indicating that integration is indeed mediated by rhythmic activity. Our fMRI data identified scene-selective cortex and human middle temporal complex (hMT) as likely sources of this feedback. Analytically combining our EEG and fMRI data further revealed that feedback-related representations in the alpha band shape the earliest stages of visual processing in cortex. Together, our findings indicate that the construction of coherent visual experiences relies on cortical feedback rhythms that fully traverse the visual hierarchy.
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spelling pubmed-106377412023-11-11 Alpha-frequency feedback to early visual cortex orchestrates coherent naturalistic vision Chen, Lixiang Cichy, Radoslaw M. Kaiser, Daniel Sci Adv Neuroscience During naturalistic vision, the brain generates coherent percepts by integrating sensory inputs scattered across the visual field. Here, we asked whether this integration process is mediated by rhythmic cortical feedback. In electroencephalography (EEG) and functional magnetic resonance imaging (fMRI) experiments, we experimentally manipulated integrative processing by changing the spatiotemporal coherence of naturalistic videos presented across visual hemifields. Our EEG data revealed that information about incoherent videos is coded in feedforward-related gamma activity while information about coherent videos is coded in feedback-related alpha activity, indicating that integration is indeed mediated by rhythmic activity. Our fMRI data identified scene-selective cortex and human middle temporal complex (hMT) as likely sources of this feedback. Analytically combining our EEG and fMRI data further revealed that feedback-related representations in the alpha band shape the earliest stages of visual processing in cortex. Together, our findings indicate that the construction of coherent visual experiences relies on cortical feedback rhythms that fully traverse the visual hierarchy. American Association for the Advancement of Science 2023-11-10 /pmc/articles/PMC10637741/ /pubmed/37948520 http://dx.doi.org/10.1126/sciadv.adi2321 Text en Copyright © 2023 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). https://creativecommons.org/licenses/by-nc/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (https://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.
spellingShingle Neuroscience
Chen, Lixiang
Cichy, Radoslaw M.
Kaiser, Daniel
Alpha-frequency feedback to early visual cortex orchestrates coherent naturalistic vision
title Alpha-frequency feedback to early visual cortex orchestrates coherent naturalistic vision
title_full Alpha-frequency feedback to early visual cortex orchestrates coherent naturalistic vision
title_fullStr Alpha-frequency feedback to early visual cortex orchestrates coherent naturalistic vision
title_full_unstemmed Alpha-frequency feedback to early visual cortex orchestrates coherent naturalistic vision
title_short Alpha-frequency feedback to early visual cortex orchestrates coherent naturalistic vision
title_sort alpha-frequency feedback to early visual cortex orchestrates coherent naturalistic vision
topic Neuroscience
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10637741/
https://www.ncbi.nlm.nih.gov/pubmed/37948520
http://dx.doi.org/10.1126/sciadv.adi2321
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