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Related Experiment Video

Updated: Jun 22, 2026

Using Eye-tracking to Assess the Relative Importance of Visual and Vestibular Input to Subcortical Motion Processing in the Roll Plane
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Self-motion perception during conflicting visual-vestibular acceleration.

Masayuki Ishida1, Hiroaki Fushiki, Hiroshi Nishida

  • 1Department of Otolaryngology, University of Toyama, Toyama, Japan.

Journal of Vestibular Research : Equilibrium & Orientation
|June 23, 2009
PubMed
Summary
This summary is machine-generated.

Visual stimuli can create a false sense of self-motion, known as vection. This study shows that vection can override actual physical motion, impacting spatial orientation.

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Area of Science:

  • Neuroscience
  • Human Perception
  • Vestibular System

Background:

  • Visually-induced self-motion (vection) is a known perceptual phenomenon.
  • Sensory conflict arises when visual and vestibular/somatosensory systems provide differing motion information.

Purpose of the Study:

  • To compare the influence of vection against whole-body angular acceleration on perceived self-rotation.
  • To investigate sensory conflict in self-motion perception.

Main Methods:

  • Subjects experienced conflicting visual and physical rotational stimuli.
  • Visual surround acceleration was twice the body's acceleration in the same direction.
  • Onset latency of circular vection (CV) was measured.

Main Results:

  • Subjects perceived self-acceleration in the direction of visual motion (CV), contrary to physical acceleration.
  • Delayed CV onset occurred when physical acceleration exceeded the vestibular threshold.
  • Visual information significantly influenced perceived self-acceleration.

Conclusions:

  • Illusory self-motion (vection) can dominate physical motion cues.
  • Vection plays a crucial role in spatial orientation, especially in operational environments and flight.
  • Understanding vection is vital for simulator design and human factors in aviation.