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Interaction of auditory and visual information in speech perception

B Dodd

    British Journal of Psychology (London, England : 1953)
    |November 1, 1980
    PubMed
    Summary

    Hearing individuals utilize stored auditory information to enhance lip-reading, while sighted individuals do not use stored visual information for auditory speech processing. This research explores sensory information

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    Area of Science:

    • Cognitive Psychology
    • Neuroscience
    • Speech Perception

    Background:

    • Understanding how sensory information is integrated in speech perception is crucial.
    • Previous research suggests modality-specific contributions to speech processing.

    Purpose of the Study:

    • To investigate the role of stored auditory and visual information in unimodal speech perception tasks.
    • To determine if sensory experience (hearing/sight) influences the use of stored information during speech perception.

    Main Methods:

    • Two experiments were conducted involving unimodal speech perception tasks.
    • Experiment 1 compared lip-reading performance between hearing and deaf subjects.
    • Experiment 2 compared auditory mispronunciation detection between sighted and congenitally blind subjects.

    Main Results:

    • Hearing subjects outperformed deaf subjects in lip-reading, suggesting auditory information aids visual speech perception.
    • Sighted subjects' performance in auditory tasks did not differ from blind subjects, indicating no use of stored visual information.
    • Stored auditory information aids visual speech perception, but stored visual information does not aid auditory speech perception.

    Conclusions:

    • Auditory information plays a significant role in supplementing visual speech perception.
    • Stored visual information is not utilized to enhance auditory speech processing.
    • The findings highlight the distinct roles of stored sensory information in different speech perception modalities.

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