Experimental Brain Research

, Volume 135, Issue 1, pp 12–21 | Cite as

Visual and non-visual cues in the perception of linear self motion

  • Laurence R. Harris
  • Michael Jenkin
  • Daniel C. Zikovitz
Research Article

Abstract.

Surprisingly little is known of the perceptual consequences of visual or vestibular stimulation in updating our perceived position in space as we move around. We assessed the roles of visual and vestibular cues in determining the perceived distance of passive, linear self motion. Subjects were given cues to constant-acceleration motion: either optic flow presented in a virtual reality display, physical motion in the dark or combinations of visual and physical motions. Subjects indicated when they perceived they had traversed a distance that had been previously given to them either visually or physically. The perceived distance of motion evoked by optic flow was accurate relative to a previously presented visual target but was perceptually equivalent to about half the physical motion. The perceived distance of physical motion in the dark was accurate relative to a previously presented physical motion but was perceptually equivalent to a much longer visually presented distance. The perceived distance of self motion when both visual and physical cues were present was more closely perceptually equivalent to the physical motion experienced rather than the simultaneous visual motion, even when the target was presented visually. We discuss this dominance of the physical cues in determining the perceived distance of self motion in terms of capture by non-visual cues. These findings are related to emerging studies that show the importance of vestibular input to neural mechanisms that process self motion.

Self motion Linear vection Vestibular Otoliths Optic flow Cross-modal perception Perceptual equivalence 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© Springer-Verlag 2000

Authors and Affiliations

  • Laurence R. Harris
    • 1
  • Michael Jenkin
    • 2
  • Daniel C. Zikovitz
    • 3
  1. 1.Department of Psychology, York University, Toronto, Ontario, M3J 1P3, Canada
  2. 2.Department of Computer Science, York University, Toronto, Canada
  3. 3.Centre for Vision Research at York University and Department of Biology, York University, Toronto, Canada

Personalised recommendations