Neural dynamics of visual ambiguity resolution by perceptual prior
Past experiences have enormous power in shaping our daily perception. Currently, dynamical neural mechanisms underlying this process remain mysterious. Exploiting a dramatic visual phenomenon, where a single experience of viewing a clear image allows instant recognition of a related degraded image,...
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doaj-f925834f736046018c90124befe29e3b2021-05-05T17:27:24ZengeLife Sciences Publications LtdeLife2050-084X2019-03-01810.7554/eLife.41861Neural dynamics of visual ambiguity resolution by perceptual priorMatthew W Flounders0https://orcid.org/0000-0001-7014-4665Carlos González-García1https://orcid.org/0000-0001-6627-5777Richard Hardstone2https://orcid.org/0000-0002-7502-9145Biyu J He3https://orcid.org/0000-0003-1549-1351Neuroscience Institute, New York University Langone Medical Center, New York, United StatesDepartment of Experimental Psychology, Ghent University, Ghent, BelgiumNeuroscience Institute, New York University Langone Medical Center, New York, United StatesNeuroscience Institute, New York University Langone Medical Center, New York, United States; Department of Neurology, New York University Langone Medical Center, New York, United States; Department of Neuroscience and Physiology, New York University Langone Medical Center, New York, United States; Department of Radiology, New York University Langone Medical Center, New York, United StatesPast experiences have enormous power in shaping our daily perception. Currently, dynamical neural mechanisms underlying this process remain mysterious. Exploiting a dramatic visual phenomenon, where a single experience of viewing a clear image allows instant recognition of a related degraded image, we investigated this question using MEG and 7 Tesla fMRI in humans. We observed that following the acquisition of perceptual priors, different degraded images are represented much more distinctly in neural dynamics starting from ~500 ms after stimulus onset. Content-specific neural activity related to stimulus-feature processing dominated within 300 ms after stimulus onset, while content-specific neural activity related to recognition processing dominated from 500 ms onward. Model-driven MEG-fMRI data fusion revealed the spatiotemporal evolution of neural activities involved in stimulus, attentional, and recognition processing. Together, these findings shed light on how experience shapes perceptual processing across space and time in the brain.https://elifesciences.org/articles/41861visual perceptionpast experienceprior knowledgeMEG7T fMRIrepresentational similarity analysis |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Matthew W Flounders Carlos González-García Richard Hardstone Biyu J He |
spellingShingle |
Matthew W Flounders Carlos González-García Richard Hardstone Biyu J He Neural dynamics of visual ambiguity resolution by perceptual prior eLife visual perception past experience prior knowledge MEG 7T fMRI representational similarity analysis |
author_facet |
Matthew W Flounders Carlos González-García Richard Hardstone Biyu J He |
author_sort |
Matthew W Flounders |
title |
Neural dynamics of visual ambiguity resolution by perceptual prior |
title_short |
Neural dynamics of visual ambiguity resolution by perceptual prior |
title_full |
Neural dynamics of visual ambiguity resolution by perceptual prior |
title_fullStr |
Neural dynamics of visual ambiguity resolution by perceptual prior |
title_full_unstemmed |
Neural dynamics of visual ambiguity resolution by perceptual prior |
title_sort |
neural dynamics of visual ambiguity resolution by perceptual prior |
publisher |
eLife Sciences Publications Ltd |
series |
eLife |
issn |
2050-084X |
publishDate |
2019-03-01 |
description |
Past experiences have enormous power in shaping our daily perception. Currently, dynamical neural mechanisms underlying this process remain mysterious. Exploiting a dramatic visual phenomenon, where a single experience of viewing a clear image allows instant recognition of a related degraded image, we investigated this question using MEG and 7 Tesla fMRI in humans. We observed that following the acquisition of perceptual priors, different degraded images are represented much more distinctly in neural dynamics starting from ~500 ms after stimulus onset. Content-specific neural activity related to stimulus-feature processing dominated within 300 ms after stimulus onset, while content-specific neural activity related to recognition processing dominated from 500 ms onward. Model-driven MEG-fMRI data fusion revealed the spatiotemporal evolution of neural activities involved in stimulus, attentional, and recognition processing. Together, these findings shed light on how experience shapes perceptual processing across space and time in the brain. |
topic |
visual perception past experience prior knowledge MEG 7T fMRI representational similarity analysis |
url |
https://elifesciences.org/articles/41861 |
work_keys_str_mv |
AT matthewwflounders neuraldynamicsofvisualambiguityresolutionbyperceptualprior AT carlosgonzalezgarcia neuraldynamicsofvisualambiguityresolutionbyperceptualprior AT richardhardstone neuraldynamicsofvisualambiguityresolutionbyperceptualprior AT biyujhe neuraldynamicsofvisualambiguityresolutionbyperceptualprior |
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