Stereoscopic advantages for vection induced by radial, circular, and spiral optic flows.
Although observer motions project different patterns of optic flow to our left and right eyes, there has been surprisingly little research into potential stereoscopic contributions to self-motion perception. This study investigated whether visually induced illusory self-motion (i.e., vection) is influenced by the addition of consistent stereoscopic information to radial, circular, and spiral (i.e., combined radial + circular) patterns of optic flow. Stereoscopic vection advantages were found for radial and spiral (but not circular) flows when monocular motion signals were strong. Under these conditions, stereoscopic benefits were greater for spiral flow than for radial flow. These effects can be explained by differences in the motion aftereffects generated by these displays, which suggest that the circular motion component in spiral flow selectively reduced adaptation to stereoscopic motion-in-depth. Stereoscopic vection advantages were not observed for circular flow when monocular motion signals were strong, but emerged when monocular motion signals were weakened. These findings show that stereoscopic information can contribute to visual self-motion perception in multiple ways.
School of Psychology, University of Wollongong, Wollongong, Australiastephenp@uow.edu.au.
Stephen
S
Palmisano
School of Psychology, University of Wollongong, Wollongong, Australiass240@uowmail.edu.au.
Stephanie
S
Summersby
School of Psychology, University of Wollongong, Wollongong, Australiarodney.g.davies@gmail.com.
Rodney G
RG
Davies
School of Optometry and Vision Science, The University of New South Wales, Kensington, Australiajuno.kim@unsw.edu.au.
Juno
J
Kim
D000328:Adult; D003867:Depth Perception / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D009039:Motion Perception / Q000502:physiology*; D057849:Optic Flow / Q000502:physiology*; D009903:Optical Illusions / Q000502:physiology*; D015348:Vision, Binocular / Q000502:physiology*; D055815:Young Adult