What accounts for individual differences in susceptibility to the McGurk effect?

The McGurk effect is a classic audiovisual speech illusion in which discrepant auditory and visual syllables can lead to a fused percept (e.g., an auditory /bɑ/ paired with a visual /gɑ/ often leads to the perception of /dɑ/). The McGurk effect is robust and easily replicated in pooled group data, b...

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Main Authors: Violet A Brown, Maryam Hedayati, Annie Zanger, Sasha Mayn, Lucia Ray, Naseem Dillman-Hasso, Julia F Strand
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2018-01-01
Series:PLoS ONE
Online Access:http://europepmc.org/articles/PMC6231656?pdf=render
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author Violet A Brown
Maryam Hedayati
Annie Zanger
Sasha Mayn
Lucia Ray
Naseem Dillman-Hasso
Julia F Strand
author_facet Violet A Brown
Maryam Hedayati
Annie Zanger
Sasha Mayn
Lucia Ray
Naseem Dillman-Hasso
Julia F Strand
author_sort Violet A Brown
collection DOAJ
description The McGurk effect is a classic audiovisual speech illusion in which discrepant auditory and visual syllables can lead to a fused percept (e.g., an auditory /bɑ/ paired with a visual /gɑ/ often leads to the perception of /dɑ/). The McGurk effect is robust and easily replicated in pooled group data, but there is tremendous variability in the extent to which individual participants are susceptible to it. In some studies, the rate at which individuals report fusion responses ranges from 0% to 100%. Despite its widespread use in the audiovisual speech perception literature, the roots of the wide variability in McGurk susceptibility are largely unknown. This study evaluated whether several perceptual and cognitive traits are related to McGurk susceptibility through correlational analyses and mixed effects modeling. We found that an individual's susceptibility to the McGurk effect was related to their ability to extract place of articulation information from the visual signal (i.e., a more fine-grained analysis of lipreading ability), but not to scores on tasks measuring attentional control, processing speed, working memory capacity, or auditory perceptual gradiency. These results provide support for the claim that a small amount of the variability in susceptibility to the McGurk effect is attributable to lipreading skill. In contrast, cognitive and perceptual abilities that are commonly used predictors in individual differences studies do not appear to underlie susceptibility to the McGurk effect.
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spelling doaj.art-6448674ae56e4f679909aed6e8ed07d62022-12-21T19:14:23ZengPublic Library of Science (PLoS)PLoS ONE1932-62032018-01-011311e020716010.1371/journal.pone.0207160What accounts for individual differences in susceptibility to the McGurk effect?Violet A BrownMaryam HedayatiAnnie ZangerSasha MaynLucia RayNaseem Dillman-HassoJulia F StrandThe McGurk effect is a classic audiovisual speech illusion in which discrepant auditory and visual syllables can lead to a fused percept (e.g., an auditory /bɑ/ paired with a visual /gɑ/ often leads to the perception of /dɑ/). The McGurk effect is robust and easily replicated in pooled group data, but there is tremendous variability in the extent to which individual participants are susceptible to it. In some studies, the rate at which individuals report fusion responses ranges from 0% to 100%. Despite its widespread use in the audiovisual speech perception literature, the roots of the wide variability in McGurk susceptibility are largely unknown. This study evaluated whether several perceptual and cognitive traits are related to McGurk susceptibility through correlational analyses and mixed effects modeling. We found that an individual's susceptibility to the McGurk effect was related to their ability to extract place of articulation information from the visual signal (i.e., a more fine-grained analysis of lipreading ability), but not to scores on tasks measuring attentional control, processing speed, working memory capacity, or auditory perceptual gradiency. These results provide support for the claim that a small amount of the variability in susceptibility to the McGurk effect is attributable to lipreading skill. In contrast, cognitive and perceptual abilities that are commonly used predictors in individual differences studies do not appear to underlie susceptibility to the McGurk effect.http://europepmc.org/articles/PMC6231656?pdf=render
spellingShingle Violet A Brown
Maryam Hedayati
Annie Zanger
Sasha Mayn
Lucia Ray
Naseem Dillman-Hasso
Julia F Strand
What accounts for individual differences in susceptibility to the McGurk effect?
PLoS ONE
title What accounts for individual differences in susceptibility to the McGurk effect?
title_full What accounts for individual differences in susceptibility to the McGurk effect?
title_fullStr What accounts for individual differences in susceptibility to the McGurk effect?
title_full_unstemmed What accounts for individual differences in susceptibility to the McGurk effect?
title_short What accounts for individual differences in susceptibility to the McGurk effect?
title_sort what accounts for individual differences in susceptibility to the mcgurk effect
url http://europepmc.org/articles/PMC6231656?pdf=render
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