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Overlapping multivoxel patterns for two levels of visual expectation

According to predictive accounts of perception, visual cortical regions encode sensory expectations about the external world, and the violation of those expectations by inputs (surprise). Here, using multi-voxel pattern analysis (MVPA) of functional magnetic resonance imaging (fMRI) data, we asked w...

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Autores principales: de Gardelle, Vincent, Stokes, Mark, Johnen, Vanessa M., Wyart, Valentin, Summerfield, Christopher
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3635018/
https://www.ncbi.nlm.nih.gov/pubmed/23630488
http://dx.doi.org/10.3389/fnhum.2013.00158
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author de Gardelle, Vincent
Stokes, Mark
Johnen, Vanessa M.
Wyart, Valentin
Summerfield, Christopher
author_facet de Gardelle, Vincent
Stokes, Mark
Johnen, Vanessa M.
Wyart, Valentin
Summerfield, Christopher
author_sort de Gardelle, Vincent
collection PubMed
description According to predictive accounts of perception, visual cortical regions encode sensory expectations about the external world, and the violation of those expectations by inputs (surprise). Here, using multi-voxel pattern analysis (MVPA) of functional magnetic resonance imaging (fMRI) data, we asked whether expectations and surprise activate the same pattern of voxels, in face-sensitive regions of the extra-striate visual cortex (the fusiform face area or FFA). Participants viewed pairs of repeating or alternating faces, with high or low probability of repetitions. As in previous studies, we found that repetition suppression (the attenuated BOLD response to repeated stimuli) in the FFA was more pronounced for probable repetitions, consistent with it reflecting reduced surprise to anticipated inputs. Secondly, we observed that repetition suppression and repetition enhancement responses were both consistent across scanner runs, suggesting that both have functional significance, with repetition enhancement possibly indicating the build up of sensory expectation. Critically, we also report that multi-voxels patterns associated with probability and repetition effects were significantly correlated within the left FFA. We argue that repetition enhancement responses and repetition probability effects can be seen as two types of expectation signals, occurring simultaneously, although at different processing levels (lower vs. higher), and different time scales (immediate vs. long term).
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spelling pubmed-36350182013-04-29 Overlapping multivoxel patterns for two levels of visual expectation de Gardelle, Vincent Stokes, Mark Johnen, Vanessa M. Wyart, Valentin Summerfield, Christopher Front Hum Neurosci Neuroscience According to predictive accounts of perception, visual cortical regions encode sensory expectations about the external world, and the violation of those expectations by inputs (surprise). Here, using multi-voxel pattern analysis (MVPA) of functional magnetic resonance imaging (fMRI) data, we asked whether expectations and surprise activate the same pattern of voxels, in face-sensitive regions of the extra-striate visual cortex (the fusiform face area or FFA). Participants viewed pairs of repeating or alternating faces, with high or low probability of repetitions. As in previous studies, we found that repetition suppression (the attenuated BOLD response to repeated stimuli) in the FFA was more pronounced for probable repetitions, consistent with it reflecting reduced surprise to anticipated inputs. Secondly, we observed that repetition suppression and repetition enhancement responses were both consistent across scanner runs, suggesting that both have functional significance, with repetition enhancement possibly indicating the build up of sensory expectation. Critically, we also report that multi-voxels patterns associated with probability and repetition effects were significantly correlated within the left FFA. We argue that repetition enhancement responses and repetition probability effects can be seen as two types of expectation signals, occurring simultaneously, although at different processing levels (lower vs. higher), and different time scales (immediate vs. long term). Frontiers Media S.A. 2013-04-25 /pmc/articles/PMC3635018/ /pubmed/23630488 http://dx.doi.org/10.3389/fnhum.2013.00158 Text en Copyright © 2013 de Gardelle, Stokes, Johnen, Wyart and Summerfield. http://creativecommons.org/licenses/by/3.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in other forums, provided the original authors and source are credited and subject to any copyright notices concerning any third-party graphics etc.
spellingShingle Neuroscience
de Gardelle, Vincent
Stokes, Mark
Johnen, Vanessa M.
Wyart, Valentin
Summerfield, Christopher
Overlapping multivoxel patterns for two levels of visual expectation
title Overlapping multivoxel patterns for two levels of visual expectation
title_full Overlapping multivoxel patterns for two levels of visual expectation
title_fullStr Overlapping multivoxel patterns for two levels of visual expectation
title_full_unstemmed Overlapping multivoxel patterns for two levels of visual expectation
title_short Overlapping multivoxel patterns for two levels of visual expectation
title_sort overlapping multivoxel patterns for two levels of visual expectation
topic Neuroscience
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3635018/
https://www.ncbi.nlm.nih.gov/pubmed/23630488
http://dx.doi.org/10.3389/fnhum.2013.00158
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