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    Disentangling the visual, motor and representational effects of vestibular input

    Abekawa, N. and Ferrè, Elisa Raffaella and Gallagher, M. and Gomi, H. and Haggard, P. (2018) Disentangling the visual, motor and representational effects of vestibular input. Cortex 104 , pp. 46-57. ISSN 0010-9452.

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    The body midline provides a basic reference for egocentric representation of external space. Clinical observations have suggested that vestibular information underpins egocentric representations. Here we aimed to clarify whether and how vestibular inputs contribute to egocentric representation in healthy volunteers. In a psychophysical task, participants were asked to judge whether visual stimuli were located to the left or to the right of their body midline. Artificial vestibular stimulation was applied to stimulate the vestibular organs. We found that artificial stimulation of the vestibular system biased body midline perception. Importantly, no effect was found on motor effector selection. We also ruled out additional explanations based on allocentric visual representations and on potential indirect effects caused by vestibular-driven movements of the eyes, head and body. Taken together our data suggest that vestibular information contributes to computation of egocentric representations by affecting the internal representation of the body midline.


    Item Type: Article
    Keyword(s) / Subject(s): Vestibular system, Egocentric representation, Multisensory integration
    School: School of Science > Psychological Sciences
    Depositing User: Elisa Raffaella Ferre
    Date Deposited: 22 Sep 2021 11:00
    Last Modified: 24 Sep 2021 06:33


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