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Neural Dynamics of Audiovisual Synchrony and Asynchrony Perception in 6-Month-Old Infants
Young infants are sensitive to multisensory temporal synchrony relations, but the neural dynamics of temporal interactions between vision and audition in infancy are not well understood. We investigated audiovisual synchrony and asynchrony perception in 6-month-old infants using event-related brain...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Frontiers Media S.A.
2013
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3549545/ https://www.ncbi.nlm.nih.gov/pubmed/23346071 http://dx.doi.org/10.3389/fpsyg.2013.00002 |
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author | Kopp, Franziska Dietrich, Claudia |
author_facet | Kopp, Franziska Dietrich, Claudia |
author_sort | Kopp, Franziska |
collection | PubMed |
description | Young infants are sensitive to multisensory temporal synchrony relations, but the neural dynamics of temporal interactions between vision and audition in infancy are not well understood. We investigated audiovisual synchrony and asynchrony perception in 6-month-old infants using event-related brain potentials (ERP). In a prior behavioral experiment (n = 45), infants were habituated to an audiovisual synchronous stimulus and tested for recovery of interest by presenting an asynchronous test stimulus in which the visual stream was delayed with respect to the auditory stream by 400 ms. Infants who behaviorally discriminated the change in temporal alignment were included in further analyses. In the EEG experiment (final sample: n = 15), synchronous and asynchronous stimuli (visual delay of 400 ms) were presented in random order. Results show latency shifts in the auditory ERP components N1 and P2 as well as the infant ERP component Nc. Latencies in the asynchronous condition were significantly longer than in the synchronous condition. After video onset but preceding the auditory onset, amplitude modulations propagating from posterior to anterior sites and related to the Pb component of infants’ ERP were observed. Results suggest temporal interactions between the two modalities. Specifically, they point to the significance of anticipatory visual motion for auditory processing, and indicate young infants’ predictive capacities for audiovisual temporal synchrony relations. |
format | Online Article Text |
id | pubmed-3549545 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-35495452013-01-23 Neural Dynamics of Audiovisual Synchrony and Asynchrony Perception in 6-Month-Old Infants Kopp, Franziska Dietrich, Claudia Front Psychol Psychology Young infants are sensitive to multisensory temporal synchrony relations, but the neural dynamics of temporal interactions between vision and audition in infancy are not well understood. We investigated audiovisual synchrony and asynchrony perception in 6-month-old infants using event-related brain potentials (ERP). In a prior behavioral experiment (n = 45), infants were habituated to an audiovisual synchronous stimulus and tested for recovery of interest by presenting an asynchronous test stimulus in which the visual stream was delayed with respect to the auditory stream by 400 ms. Infants who behaviorally discriminated the change in temporal alignment were included in further analyses. In the EEG experiment (final sample: n = 15), synchronous and asynchronous stimuli (visual delay of 400 ms) were presented in random order. Results show latency shifts in the auditory ERP components N1 and P2 as well as the infant ERP component Nc. Latencies in the asynchronous condition were significantly longer than in the synchronous condition. After video onset but preceding the auditory onset, amplitude modulations propagating from posterior to anterior sites and related to the Pb component of infants’ ERP were observed. Results suggest temporal interactions between the two modalities. Specifically, they point to the significance of anticipatory visual motion for auditory processing, and indicate young infants’ predictive capacities for audiovisual temporal synchrony relations. Frontiers Media S.A. 2013-01-21 /pmc/articles/PMC3549545/ /pubmed/23346071 http://dx.doi.org/10.3389/fpsyg.2013.00002 Text en Copyright © 2013 Kopp and Dietrich. 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 | Psychology Kopp, Franziska Dietrich, Claudia Neural Dynamics of Audiovisual Synchrony and Asynchrony Perception in 6-Month-Old Infants |
title | Neural Dynamics of Audiovisual Synchrony and Asynchrony Perception in 6-Month-Old Infants |
title_full | Neural Dynamics of Audiovisual Synchrony and Asynchrony Perception in 6-Month-Old Infants |
title_fullStr | Neural Dynamics of Audiovisual Synchrony and Asynchrony Perception in 6-Month-Old Infants |
title_full_unstemmed | Neural Dynamics of Audiovisual Synchrony and Asynchrony Perception in 6-Month-Old Infants |
title_short | Neural Dynamics of Audiovisual Synchrony and Asynchrony Perception in 6-Month-Old Infants |
title_sort | neural dynamics of audiovisual synchrony and asynchrony perception in 6-month-old infants |
topic | Psychology |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3549545/ https://www.ncbi.nlm.nih.gov/pubmed/23346071 http://dx.doi.org/10.3389/fpsyg.2013.00002 |
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