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The unity hypothesis revisited: can the male/female incongruent McGurk effect be disrupted by familiarization and priming?

The unity assumption hypothesis contends that higher-level factors, such as a perceiver’s belief and prior experience, modulate multisensory integration. The McGurk illusion exemplifies such integration. When a visual velar consonant /ga/ is dubbed with an auditory bilabial /ba/, listeners unify the...

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Autores principales: Ma, Kennis S. T., Schnupp, Jan W. H.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10495566/
https://www.ncbi.nlm.nih.gov/pubmed/37705948
http://dx.doi.org/10.3389/fpsyg.2023.1106562
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author Ma, Kennis S. T.
Schnupp, Jan W. H.
author_facet Ma, Kennis S. T.
Schnupp, Jan W. H.
author_sort Ma, Kennis S. T.
collection PubMed
description The unity assumption hypothesis contends that higher-level factors, such as a perceiver’s belief and prior experience, modulate multisensory integration. The McGurk illusion exemplifies such integration. When a visual velar consonant /ga/ is dubbed with an auditory bilabial /ba/, listeners unify the discrepant signals with knowledge that open lips cannot produce /ba/ and a fusion percept /da/ is perceived. Previous research claimed to have falsified the unity assumption hypothesis by demonstrating the McGurk effect occurs even when a face is dubbed with a voice of the opposite sex, and thus violates expectations from prior experience. But perhaps stronger counter-evidence is needed to prevent perceptual unity than just an apparent incongruence between unfamiliar faces and voices. Here we investigated whether the McGurk illusion with male/female incongruent stimuli can be disrupted by familiarization and priming with an appropriate pairing of face and voice. In an online experiment, the susceptibility of participants to the McGurk illusion was tested with stimuli containing either a male or female face with a voice of incongruent gender. The number of times participants experienced a McGurk illusion was measured before and after a familiarization block, which familiarized them with the true pairings of face and voice. After familiarization and priming, the susceptibility to the McGurk effects decreased significantly on average. The findings support the notion that unity assumptions modulate intersensory bias, and confirm and extend previous studies using male/female incongruent McGurk stimuli.
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spelling pubmed-104955662023-09-13 The unity hypothesis revisited: can the male/female incongruent McGurk effect be disrupted by familiarization and priming? Ma, Kennis S. T. Schnupp, Jan W. H. Front Psychol Psychology The unity assumption hypothesis contends that higher-level factors, such as a perceiver’s belief and prior experience, modulate multisensory integration. The McGurk illusion exemplifies such integration. When a visual velar consonant /ga/ is dubbed with an auditory bilabial /ba/, listeners unify the discrepant signals with knowledge that open lips cannot produce /ba/ and a fusion percept /da/ is perceived. Previous research claimed to have falsified the unity assumption hypothesis by demonstrating the McGurk effect occurs even when a face is dubbed with a voice of the opposite sex, and thus violates expectations from prior experience. But perhaps stronger counter-evidence is needed to prevent perceptual unity than just an apparent incongruence between unfamiliar faces and voices. Here we investigated whether the McGurk illusion with male/female incongruent stimuli can be disrupted by familiarization and priming with an appropriate pairing of face and voice. In an online experiment, the susceptibility of participants to the McGurk illusion was tested with stimuli containing either a male or female face with a voice of incongruent gender. The number of times participants experienced a McGurk illusion was measured before and after a familiarization block, which familiarized them with the true pairings of face and voice. After familiarization and priming, the susceptibility to the McGurk effects decreased significantly on average. The findings support the notion that unity assumptions modulate intersensory bias, and confirm and extend previous studies using male/female incongruent McGurk stimuli. Frontiers Media S.A. 2023-08-29 /pmc/articles/PMC10495566/ /pubmed/37705948 http://dx.doi.org/10.3389/fpsyg.2023.1106562 Text en Copyright © 2023 Ma and Schnupp. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Psychology
Ma, Kennis S. T.
Schnupp, Jan W. H.
The unity hypothesis revisited: can the male/female incongruent McGurk effect be disrupted by familiarization and priming?
title The unity hypothesis revisited: can the male/female incongruent McGurk effect be disrupted by familiarization and priming?
title_full The unity hypothesis revisited: can the male/female incongruent McGurk effect be disrupted by familiarization and priming?
title_fullStr The unity hypothesis revisited: can the male/female incongruent McGurk effect be disrupted by familiarization and priming?
title_full_unstemmed The unity hypothesis revisited: can the male/female incongruent McGurk effect be disrupted by familiarization and priming?
title_short The unity hypothesis revisited: can the male/female incongruent McGurk effect be disrupted by familiarization and priming?
title_sort unity hypothesis revisited: can the male/female incongruent mcgurk effect be disrupted by familiarization and priming?
topic Psychology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10495566/
https://www.ncbi.nlm.nih.gov/pubmed/37705948
http://dx.doi.org/10.3389/fpsyg.2023.1106562
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