Investigating Human Visual Sensitivity to Binocular Motion-in-Depth for Anti- and De-Correlated Random-Dot Stimuli
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 meth...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-11-01
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| Series: | Vision |
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| Online Access: | https://www.mdpi.com/2411-5150/2/4/41 |
| _version_ | 1828488261316640768 |
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| author | Martin Giesel Alex R. Wade Marina Bloj Julie M. Harris |
| author_facet | Martin Giesel Alex R. Wade Marina Bloj Julie M. Harris |
| author_sort | Martin Giesel |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-11T10:06:44Z |
| format | Article |
| id | doaj.art-50fae15a92884b0ab78a675cfe8427f9 |
| institution | Directory Open Access Journal |
| issn | 2411-5150 |
| language | English |
| last_indexed | 2024-12-11T10:06:44Z |
| publishDate | 2018-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Vision |
| spelling | doaj.art-50fae15a92884b0ab78a675cfe8427f92022-12-22T01:11:55ZengMDPI AGVision2411-51502018-11-01244110.3390/vision2040041vision2040041Investigating Human Visual Sensitivity to Binocular Motion-in-Depth for Anti- and De-Correlated Random-Dot StimuliMartin Giesel0Alex R. Wade1Marina Bloj2Julie M. Harris3School of Psychology and Neuroscience, University of St Andrews, St Andrews KY16 9JP, UKDepartment of Psychology, University of York, York YO10 5DD, UKSchool of Optometry and Vision Science, University of Bradford, Bradford BD7 1DP, UKSchool of Psychology and Neuroscience, University of St Andrews, St Andrews KY16 9JP, UKMotion-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.https://www.mdpi.com/2411-5150/2/4/41motion-in-depth3D motionbinocular cuesdisparityCDIOVDanti-correlationde-correlation |
| spellingShingle | Martin Giesel Alex R. Wade Marina Bloj Julie M. Harris Investigating Human Visual Sensitivity to Binocular Motion-in-Depth for Anti- and De-Correlated Random-Dot Stimuli Vision motion-in-depth 3D motion binocular cues disparity CD IOVD anti-correlation de-correlation |
| title | Investigating Human Visual Sensitivity to Binocular Motion-in-Depth for Anti- and De-Correlated Random-Dot Stimuli |
| title_full | Investigating Human Visual Sensitivity to Binocular Motion-in-Depth for Anti- and De-Correlated Random-Dot Stimuli |
| title_fullStr | Investigating Human Visual Sensitivity to Binocular Motion-in-Depth for Anti- and De-Correlated Random-Dot Stimuli |
| title_full_unstemmed | Investigating Human Visual Sensitivity to Binocular Motion-in-Depth for Anti- and De-Correlated Random-Dot Stimuli |
| title_short | Investigating Human Visual Sensitivity to Binocular Motion-in-Depth for Anti- and De-Correlated Random-Dot Stimuli |
| title_sort | investigating human visual sensitivity to binocular motion in depth for anti and de correlated random dot stimuli |
| topic | motion-in-depth 3D motion binocular cues disparity CD IOVD anti-correlation de-correlation |
| url | https://www.mdpi.com/2411-5150/2/4/41 |
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