Loading...
Investigating human visual sensitivity to binocular motion-in-depth for anti- and de-correlated random-dot stimuli
Giesel, M. Wade, A.R. Bloj, Marina Harris, J.M.
Giesel, M.
Wade, A.R.
Bloj, Marina
Harris, J.M.
Publication Date
2018-11
End of Embargo
Supervisor
Rights
© 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access
article distributed under the terms and conditions of the Creative Commons Attribution
(CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Peer-Reviewed
Yes
Open Access status
openAccess
Accepted for publication
29/10/2018
Institution
Department
Awarded
Embargo end date
Collections
Additional title
Abstract
Motion-in-depth can be detected by using two different types of binocular cues: change
of disparity (CD) and inter-ocular velocity differences (IOVD). To investigate the underlying
detection mechanisms, stimuli can be constructed that isolate these cues or contain both (FULL cue).
Two different methods to isolate the IOVD cue can be employed: anti-correlated (aIOVD) and
de-correlated (dIOVD) motion signals. While both types of stimuli have been used in studies
investigating the perception of motion-in-depth, for the first time, we explore whether both stimuli
isolate the same mechanism and how they differ in their relative efficacy. Here, we set out to directly
compare aIOVD and dIOVD sensitivity by measuring motion coherence thresholds. In accordance
with previous results by Czuba et al. (2010), we found that motion coherence thresholds were similar
for aIOVD and FULL cue stimuli for most participants. Thresholds for dIOVD stimuli, however,
differed consistently from thresholds for the two other cues, suggesting that aIOVD and dIOVD
stimuli could be driving different visual mechanisms.
Version
Published version
Citation
Giesel M, Wade AR, Bloj M et al (2018) Investigating human visual sensitivity to binocular motion-in-depth for anti- and de-correlated random-dot stimuli. Vision. 2(4): 41.
Link to publisher’s version
Link to published version
Link to Version of Record
Type
Article