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A Psychophysical Investigation of Differences between Synchrony and Temporal Order Judgments
BACKGROUND: Synchrony judgments involve deciding whether cues to an event are in synch or out of synch, while temporal order judgments involve deciding which of the cues came first. When the cues come from different sensory modalities these judgments can be used to investigate multisensory integrati...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2013
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3549984/ https://www.ncbi.nlm.nih.gov/pubmed/23349971 http://dx.doi.org/10.1371/journal.pone.0054798 |
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author | Love, Scott A. Petrini, Karin Cheng, Adam Pollick, Frank E. |
author_facet | Love, Scott A. Petrini, Karin Cheng, Adam Pollick, Frank E. |
author_sort | Love, Scott A. |
collection | PubMed |
description | BACKGROUND: Synchrony judgments involve deciding whether cues to an event are in synch or out of synch, while temporal order judgments involve deciding which of the cues came first. When the cues come from different sensory modalities these judgments can be used to investigate multisensory integration in the temporal domain. However, evidence indicates that that these two tasks should not be used interchangeably as it is unlikely that they measure the same perceptual mechanism. The current experiment further explores this issue across a variety of different audiovisual stimulus types. METHODOLOGY/PRINCIPAL FINDINGS: Participants were presented with 5 audiovisual stimulus types, each at 11 parametrically manipulated levels of cue asynchrony. During separate blocks, participants had to make synchrony judgments or temporal order judgments. For some stimulus types many participants were unable to successfully make temporal order judgments, but they were able to make synchrony judgments. The mean points of subjective simultaneity for synchrony judgments were all video-leading, while those for temporal order judgments were all audio-leading. In the within participants analyses no correlation was found across the two tasks for either the point of subjective simultaneity or the temporal integration window. CONCLUSIONS: Stimulus type influenced how the two tasks differed; nevertheless, consistent differences were found between the two tasks regardless of stimulus type. Therefore, in line with previous work, we conclude that synchrony and temporal order judgments are supported by different perceptual mechanisms and should not be interpreted as being representative of the same perceptual process. |
format | Online Article Text |
id | pubmed-3549984 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-35499842013-01-24 A Psychophysical Investigation of Differences between Synchrony and Temporal Order Judgments Love, Scott A. Petrini, Karin Cheng, Adam Pollick, Frank E. PLoS One Research Article BACKGROUND: Synchrony judgments involve deciding whether cues to an event are in synch or out of synch, while temporal order judgments involve deciding which of the cues came first. When the cues come from different sensory modalities these judgments can be used to investigate multisensory integration in the temporal domain. However, evidence indicates that that these two tasks should not be used interchangeably as it is unlikely that they measure the same perceptual mechanism. The current experiment further explores this issue across a variety of different audiovisual stimulus types. METHODOLOGY/PRINCIPAL FINDINGS: Participants were presented with 5 audiovisual stimulus types, each at 11 parametrically manipulated levels of cue asynchrony. During separate blocks, participants had to make synchrony judgments or temporal order judgments. For some stimulus types many participants were unable to successfully make temporal order judgments, but they were able to make synchrony judgments. The mean points of subjective simultaneity for synchrony judgments were all video-leading, while those for temporal order judgments were all audio-leading. In the within participants analyses no correlation was found across the two tasks for either the point of subjective simultaneity or the temporal integration window. CONCLUSIONS: Stimulus type influenced how the two tasks differed; nevertheless, consistent differences were found between the two tasks regardless of stimulus type. Therefore, in line with previous work, we conclude that synchrony and temporal order judgments are supported by different perceptual mechanisms and should not be interpreted as being representative of the same perceptual process. Public Library of Science 2013-01-21 /pmc/articles/PMC3549984/ /pubmed/23349971 http://dx.doi.org/10.1371/journal.pone.0054798 Text en © 2013 Love et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited. |
spellingShingle | Research Article Love, Scott A. Petrini, Karin Cheng, Adam Pollick, Frank E. A Psychophysical Investigation of Differences between Synchrony and Temporal Order Judgments |
title | A Psychophysical Investigation of Differences between Synchrony and Temporal Order Judgments |
title_full | A Psychophysical Investigation of Differences between Synchrony and Temporal Order Judgments |
title_fullStr | A Psychophysical Investigation of Differences between Synchrony and Temporal Order Judgments |
title_full_unstemmed | A Psychophysical Investigation of Differences between Synchrony and Temporal Order Judgments |
title_short | A Psychophysical Investigation of Differences between Synchrony and Temporal Order Judgments |
title_sort | psychophysical investigation of differences between synchrony and temporal order judgments |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3549984/ https://www.ncbi.nlm.nih.gov/pubmed/23349971 http://dx.doi.org/10.1371/journal.pone.0054798 |
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