Radboud Repository

      View Item 
      •   Radboud Repository
      • Collections Radboud University
      • Datasets
      • View Item
      •   Radboud Repository
      • Collections Radboud University
      • Datasets
      • View Item
      JavaScript is disabled for your browser. Some features of this site may not work without it.
      BrowseAll of RepositoryCollectionsDepartmentsDate IssuedAuthorsTitlesDocument typeThis CollectionDepartmentsDate IssuedAuthorsTitlesDocument type
      StatisticsView Item Statistics

      Rapid recalibration of speech perception after experiencing the McGurk illusion

      Find Full text
      Creators
      Lüttke, C.S.
      Pérez Bellido, A.
      Lange, F.P. de
      Date of Archiving
      2017
      Archive
      Radboud Data Repository
      Data archive handle
      https://hdl.handle.net/11633/di.dccn.DSC_3018011.02_607
      Publication type
      Dataset
      Access level
      Restricted access
      Please use this identifier to cite or link to this item: https://hdl.handle.net/2066/203832   https://hdl.handle.net/2066/203832
      Display more detailsDisplay less details
      Organization
      PI Group Predictive Brain
      SW OZ DCC CO
      Audience(s)
      Life sciences
      Languages used
      English
      Key words
      McGurk illusion; audiovisual integration; perceptual learning; signal-detection theory
      Abstract
      The human brain can quickly adapt to changes in the environment. One example is phonetic recalibration: A speech sound is interpreted differently depending on the visual speech and this interpretation persists in the absence of visual information. Here, we examined the mechanisms of phonetic recalibration. Participants categorized the auditory syllables /aba/ and /ada/, which were sometimes preceded by so-called McGurk stimuli (in which an /aba/ sound, due to visual /aga/ input, is often perceived as ‘ada’). We found that only one trial of exposure to the McGurk illusion was sufficient to induce a recalibration effect, i.e. an auditory /aba/ stimulus was subsequently more often perceived as ‘ada’. Furthermore, phonetic recalibration took place only when auditory and visual inputs were integrated to ‘ada’ (McGurk illusion). Moreover, this recalibration depended on the sensory similarity between the preceding and current auditory stimulus. Finally, signal detection theoretical analysis showed that McGurk induced phonetic recalibration resulted in both a criterion shift towards /ada/ and a reduced sensitivity to distinguish between /aba/ and /ada/ sounds. The current study shows that phonetic recalibration is dependent on the perceptual integration of audiovisual information and leads to a perceptual shift in phoneme categorization.
      This item appears in the following Collection(s)
      • Datasets [1485]
      • Donders Centre for Cognitive Neuroimaging [3660]
      • Faculty of Social Sciences [28689]
       
      •  Upload Full Text
      •  Terms of Use
      •  Notice and Takedown
      Bookmark and Share
      Admin login