On the localization of monocular stimuli in binocular stereopsis -binocular capture and stereo-illusory motion
| Project/Area Number |
17530526
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Experimental psychology
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| Research Institution | Tokyo University of Marine Science and Technology |
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Principal Investigator |
SHIMONO Koichi Tokyo University of Marine Science and Technology, Faculty of Marine Technology, Professor (70202116)
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| Project Period (FY) |
2005 – 2007
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| Project Status |
Completed (Fiscal Year 2007)
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| Budget Amount *help |
¥3,450,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥150,000)
Fiscal Year 2007: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2006: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2005: ¥2,300,000 (Direct Cost: ¥2,300,000)
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| Keywords | monocular stimuli / visual direction / head movements / phenomenal geometry / binocular stereopsis |
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| Research Abstract |
We performed experimental studies on binocular capture and stereo-illusory motion phenomena for monocular stimuli. We found a phenomenon that visual directions of monocular stimuli embedded in binocular stimuli, consisted of random-dots pattern, changes as a function of retinal disparity of the binocular stimuli as that of binocular stimuli does, and we call the phenomenon "binocular depth capture" or "binocular surface-default" phenomenon. It was found that sires of the binocular stimuli and densities of dots of the binocular stimuli had an effect on the binocular capture but widths of monocular stimuli did not. This result indicates that there is an exceptional condition in which the role of visual direction of monocular stimuli is violated. (Vision Research, 2005). We also found that stationary monocular stimuli, which may give rise to the binocular capture, can move concomitantly with the lateral head movements as the binocular stimuli do. In the literature, the apparent movement of binocular stimuli having retinal disparity has been known as a "stereo-illusory motion" phenomenon and the phenomenon has been explained by the phenomenal geometry (Gogel, 1990).Our finding for monocular stimuli can also be explained by the phenomenal geometry and perceived depth between the binocular stimuli (Vision Research, 2007). These studies suggest that when monocular stimuli are presented in or near binocular stimuli, the visual system treats the monocular stimuli as binocular.
Furthermore, we did researches on perceived depth of monocular stimuli presented on binocular stimuli and found that occlusion cue for monocular stimuli provided order information but not magnitude information (Vision, 2006). Moreover, we performed experimental studies on binocular stereopsis and head movements (Perception Colloquium, 2008) and reviewed studies on stereoanomalies (Japanese Journal of Optics, 2007).
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Report
(4 results)
Research Products
(43 results)
