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Asymmetries in moving faces

R Campbell

    British Journal of Psychology (London, England : 1953)
    |February 1, 1982
    PubMed
    Summary
    This summary is machine-generated.

    Judges perceived greater movement on the left side of faces during "pulling faces" exercises, but not when speaking. Mirroring faces enhanced this leftward bias, suggesting cerebral lateralization influences facial movement perception.

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    Area of Science:

    • Cognitive Neuroscience
    • Psychology
    • Human Perception

    Background:

    • Facial expressions and their interpretation are crucial for social interaction.
    • Asymmetries in facial expression and perception have been linked to cerebral lateralization.
    • Understanding how viewing conditions affect facial movement perception is important.

    Purpose of the Study:

    • To investigate asymmetries in the judged movement of facial sides during different facial actions.
    • To examine the influence of viewing conditions (normal vs. mirror-reversed orientation) on facial movement perception.
    • To explore the role of cerebral lateralization in the perception of facial movement.

    Main Methods:

    • 102 right-handed judges viewed 16 frontally displayed moving faces.

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  • Judges reported perceived movement asymmetry (left vs. right side) during speaking and face-pulling tasks.
  • Faces were presented in normal and mirror-reversed orientations.

    • Main Results:

    • A left-side bias in perceived movement was observed during face-pulling but not during speaking.
    • Viewing orientation significantly affected judgments of exercising faces, but not speaking faces.
    • Mirror-reversed presentation of exercising faces led to a greater leftward judgment bias.

    Conclusions:

    • The findings suggest that cerebral lateralization may underlie asymmetries in facial movement perception.
    • The left hemisphere's potential role in facial expression production or interpretation could explain the observed biases.
    • Viewing conditions interact with facial actions to modulate perceived movement, highlighting the complexity of facial perception.