2005 Fiscal Year Final Research Report Summary
Mechanisms for non-luminance contours: analyses of temporal characteristics
| Project/Area Number |
15330154
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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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 | The University of Tokyo |
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Principal Investigator |
SATO Takao The University of Tokyo, Graduate School of Humanities and Sociology, Professor, 大学院人文社会系研究科, 教授 (60272449)
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| Co-Investigator(Kenkyū-buntansha) |
SEYAMA Junichiro The University of Tokyo, Graduate School of Humanities and Sociology, Research Associate, 大学院人文社会系研究科, 助手 (90302653)
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| Project Period (FY) |
2003 – 2005
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| Keywords | visual Perception / contour / non-luminance contour / temporal characteristics / SAT task |
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| Research Abstract |
Visual Contours are generally defined by luminance differences, abut they could be defined by gradients of binocular disparity, motion, texture and so on. This project tries to examine the generation processes for representations of such contours defined by attributes other than luminance. This projects especially focuses on their temporal characteristics. In the actual experiment, we examined the temporal characteristics of contour perception by using a SAT (speed-accuracy trade-off) task and compared the results with those found with cortical evoked potentials. Results from detailed experiments revealed that the temporal responses for so called second-order contours (disparity-, motion-, or texture defined) are slower in general when compared to responses for first-order (luminance) contour, but the response gradient is not different between them. In addition, good agreements were observed between these results and evoked potential responses.
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Research Products
(12 results)
