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Callum J. Osler, M. C. A. Tersteeg, Raymond F. Reynolds and Ian D. Loram Postural threat differentially affects the feedforward and feedback components of the vestibular-evoked balance response European Journal of Neuroscience 38

Article first published online: 18 AUG 2013 | DOI: 10.1111/ejn.12336

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We examined the balance response evoked by galvanic vestibular stimulation (GVS) in human subjects stood on a high narrow walkway. In this highly threatening postural context the evoked sway was significantly reduced after ~800 ms, demonstrating that subjects were strongly motivated to minimise body displacement. Despite this, the early sway response did not differ between height and ground conditions, suggesting that postural threat does not affect the feedforward vestibular control of balance.

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