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Related Experiment Videos

Gait deviations induced by visual stimulation in roll.

Erich Schneider1, Klaus Jahn, Marianne Dieterich

  • 1Department of Neurology, University Hospital of Munich - Grosshadern Ludwig-Maximilians University, Marchioninistr. 23, 81377, Munich, Germany. eschneider@nefo.med.uni-muenchen.de

Experimental Brain Research
|October 3, 2007
PubMed
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Visual disturbances during walking initially affect balance, similar to vestibular stimulation. These effects are temporary, influencing only the first few steps, not overall gait control.

Area of Science:

  • Neuroscience
  • Biomechanics
  • Human Motor Control

Background:

  • Locomotion relies on integrating proprioceptive, visual, and vestibular sensory inputs.
  • Galvanic vestibular stimulation (GVS) studies have revealed vestibular contributions to gait control, primarily through head-fixed roll rotation.
  • GVS induces polarity-specific gait deviations, highlighting its role in balance.

Purpose of the Study:

  • To investigate the effects of visual disturbances on gait control.
  • To compare the impact of visual roll vection with galvanic vestibular stimulation (GVS).
  • To determine if visual motion stimulation in the roll plane elicits similar gait responses as GVS.

Main Methods:

  • Eight healthy participants walked a 6-meter distance.

Related Experiment Videos

  • Head-fixed visual roll motion stimulation was delivered using a binocular head-mounted display with rotating random dot patterns (+/-15 degrees/s).
  • Gait trajectories were tracked to analyze locomotion responses.

    • Main Results:

    • Visual stimulation induced a noticeable effect on gait only during the initial three to four steps.
    • No significant stimulation effect on gait was observed for the entire walking distance.
    • The observed initial balance responses were similar to those previously reported for GVS.

    Conclusions:

    • Visual motion stimulation in the roll plane shares similarities with GVS in its effects on gait.
    • Both visual and vestibular roll stimulation primarily elicit transient balance responses.
    • These stimuli do not appear to significantly influence the steering (yaw plane) of gait.