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A Laboratory Study of the McGurk Effect in 324 Monozygotic and Dizygotic Twins
Guo Feng1,2,3; Bin Zhou1,2; Wen Zhou1,2; Michael S. Beauchamp4; John F. Magnotti4
First AuthorGuo Feng
2019
Source Publicationfrontiers in Neuroscience
Correspondent Emailzhouw@psych.ac.cn(wen zhou ) ; magnotti@bcm.edu(john f. magnotti )
Subtypearticle
Pages1-8
Contribution Rank1
Abstract

Multisensory integration of information from the talker’s voice and the talker’s mouth facilitates human speech perception. A popular assay of audiovisual integration is the McGurk effect, an illusion in which incongruent visual speech information categorically changes the percept of auditory speech. There is substantial interindividual variability in susceptibility to the McGurk effect. To better understand possible sources of this variability, we examined the McGurk effect in 324 native Mandarin speakers, consisting of 73 monozygotic (MZ) and 89 dizygotic (DZ) twin pairs. When tested with 9 different McGurk stimuli, some participants never perceived the illusion and others always perceived it. Within participants, perception was similar across time (r = 0.55 at a 2-year retest in 150 participants) suggesting that McGurk susceptibility reflects a stable trait rather than short-term perceptual fluctuations. To examine the effects of shared genetics and prenatal environment, we compared McGurk susceptibility between MZ and DZ twins. Both twin types had significantly greater correlation than unrelated pairs (r = 0.28 for MZ twins and r = 0.21 for DZ twins) suggesting that the genes and environmental factors shared by twins contribute to individual differences in multisensory speech perception. Conversely, the existence of substantial differences within twin pairs (even MZ co-twins) and the overall low percentage of explained variance (5.5%) argues against a deterministic view of individual differences in multisensory integration.

Keywordaudiovisual fusion multisensory integration McGurk effect twin studies behavioral genetics
DOI10.3389/fnins.2019.01029
Language英语
Citation statistics
Document Type期刊论文
Identifierhttp://ir.psych.ac.cn/handle/311026/30425
Collection中国科学院行为科学重点实验室
Affiliation1.CAS Key Laboratory of Behavioral Science, Institute of Psychology, CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Beijing, China
2.Department of Psychology, University of Chinese Academy of Sciences, Beijing, China
3.Psychological Research and Counseling Center, Southwest Jiaotong University, Chengdu, China
4.Department of Neurosurgery and Core for Advanced MRI, Baylor College of Medicine, Houston, TX, United States
Recommended Citation
GB/T 7714
Guo Feng,Bin Zhou,Wen Zhou,et al. A Laboratory Study of the McGurk Effect in 324 Monozygotic and Dizygotic Twins[J]. frontiers in Neuroscience,2019:1-8.
APA Guo Feng,Bin Zhou,Wen Zhou,Michael S. Beauchamp,&John F. Magnotti.(2019).A Laboratory Study of the McGurk Effect in 324 Monozygotic and Dizygotic Twins.frontiers in Neuroscience,1-8.
MLA Guo Feng,et al."A Laboratory Study of the McGurk Effect in 324 Monozygotic and Dizygotic Twins".frontiers in Neuroscience (2019):1-8.
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