Overlapping but Divergent Neural Correlates Underpinning Audiovisual Synchrony and Temporal Order Judgments
Multisensory processing is a core perceptual capability, and the need to understand its neural bases provides a fundamental problem in the study of brain function. Both synchrony and temporal order judgments are commonly used to investigate synchrony perception between different sensory cues and mul...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2018-07-01
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| Series: | Frontiers in Human Neuroscience |
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| Online Access: | https://www.frontiersin.org/article/10.3389/fnhum.2018.00274/full |
| _version_ | 1818907469054738432 |
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| author | Scott A. Love Scott A. Love Karin Petrini Cyril R. Pernet Marianne Latinus Marianne Latinus Frank E. Pollick |
| author_facet | Scott A. Love Scott A. Love Karin Petrini Cyril R. Pernet Marianne Latinus Marianne Latinus Frank E. Pollick |
| author_sort | Scott A. Love |
| collection | DOAJ |
| description | Multisensory processing is a core perceptual capability, and the need to understand its neural bases provides a fundamental problem in the study of brain function. Both synchrony and temporal order judgments are commonly used to investigate synchrony perception between different sensory cues and multisensory perception in general. However, extensive behavioral evidence indicates that these tasks do not measure identical perceptual processes. Here we used functional magnetic resonance imaging to investigate how behavioral differences between the tasks are instantiated as neural differences. As these neural differences could manifest at either the sustained (task/state-related) and/or transient (event-related) levels of processing, a mixed block/event-related design was used to investigate the neural response of both time-scales. Clear differences in both sustained and transient BOLD responses were observed between the two tasks, consistent with behavioral differences indeed arising from overlapping but divergent neural mechanisms. Temporal order judgments, but not synchrony judgments, required transient activation in several left hemisphere regions, which may reflect increased task demands caused by an extra stage of processing. Our results highlight that multisensory integration mechanisms can be task dependent, which, in particular, has implications for the study of atypical temporal processing in clinical populations. |
| first_indexed | 2024-12-19T21:55:37Z |
| format | Article |
| id | doaj.art-5fd27a1b43a5455a85ea1fa577d3e0cb |
| institution | Directory Open Access Journal |
| issn | 1662-5161 |
| language | English |
| last_indexed | 2024-12-19T21:55:37Z |
| publishDate | 2018-07-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Human Neuroscience |
| spelling | doaj.art-5fd27a1b43a5455a85ea1fa577d3e0cb2022-12-21T20:04:17ZengFrontiers Media S.A.Frontiers in Human Neuroscience1662-51612018-07-011210.3389/fnhum.2018.00274348530Overlapping but Divergent Neural Correlates Underpinning Audiovisual Synchrony and Temporal Order JudgmentsScott A. Love0Scott A. Love1Karin Petrini2Cyril R. Pernet3Marianne Latinus4Marianne Latinus5Frank E. Pollick6School of Psychology, University of Glasgow, Glasgow, United KingdomPhysiologie de la Reproduction et des Comportements, Institut National de la Recherche Agronomique, Centre National de la Recherche Scientifique, IFCE, Université de Tours, Nouzilly, FranceDepartment of Psychology, University of Bath, Bath, United KingdomBrain Research Imaging Centre, Imaging Sciences, University of Edinburgh, Edinburgh, United KingdomSchool of Psychology, University of Glasgow, Glasgow, United KingdomUMR1253, iBrain, Université de Tours, Inserm, Tours, FranceSchool of Psychology, University of Glasgow, Glasgow, United KingdomMultisensory processing is a core perceptual capability, and the need to understand its neural bases provides a fundamental problem in the study of brain function. Both synchrony and temporal order judgments are commonly used to investigate synchrony perception between different sensory cues and multisensory perception in general. However, extensive behavioral evidence indicates that these tasks do not measure identical perceptual processes. Here we used functional magnetic resonance imaging to investigate how behavioral differences between the tasks are instantiated as neural differences. As these neural differences could manifest at either the sustained (task/state-related) and/or transient (event-related) levels of processing, a mixed block/event-related design was used to investigate the neural response of both time-scales. Clear differences in both sustained and transient BOLD responses were observed between the two tasks, consistent with behavioral differences indeed arising from overlapping but divergent neural mechanisms. Temporal order judgments, but not synchrony judgments, required transient activation in several left hemisphere regions, which may reflect increased task demands caused by an extra stage of processing. Our results highlight that multisensory integration mechanisms can be task dependent, which, in particular, has implications for the study of atypical temporal processing in clinical populations.https://www.frontiersin.org/article/10.3389/fnhum.2018.00274/fullmultisensoryaudiovisualfMRItemporal processingasynchrony |
| spellingShingle | Scott A. Love Scott A. Love Karin Petrini Cyril R. Pernet Marianne Latinus Marianne Latinus Frank E. Pollick Overlapping but Divergent Neural Correlates Underpinning Audiovisual Synchrony and Temporal Order Judgments Frontiers in Human Neuroscience multisensory audiovisual fMRI temporal processing asynchrony |
| title | Overlapping but Divergent Neural Correlates Underpinning Audiovisual Synchrony and Temporal Order Judgments |
| title_full | Overlapping but Divergent Neural Correlates Underpinning Audiovisual Synchrony and Temporal Order Judgments |
| title_fullStr | Overlapping but Divergent Neural Correlates Underpinning Audiovisual Synchrony and Temporal Order Judgments |
| title_full_unstemmed | Overlapping but Divergent Neural Correlates Underpinning Audiovisual Synchrony and Temporal Order Judgments |
| title_short | Overlapping but Divergent Neural Correlates Underpinning Audiovisual Synchrony and Temporal Order Judgments |
| title_sort | overlapping but divergent neural correlates underpinning audiovisual synchrony and temporal order judgments |
| topic | multisensory audiovisual fMRI temporal processing asynchrony |
| url | https://www.frontiersin.org/article/10.3389/fnhum.2018.00274/full |
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