2000 Fiscal Year Final Research Report Summary
Analysis of perceptual processing of ambiguity and context in three-dimensional form perception.
| Project/Area Number |
10610079
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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 |
実験系心理学
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| Research Institution | Kyoto City University of Arts |
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Principal Investigator |
TAKAHASHI Shigeko Kyoto City Univ.of Arts, Dept. of Fine Arts, Associate Professor, 美術学部, 助教授 (90216721)
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| Project Period (FY) |
1998 – 2000
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| Keywords | form perception / functional MRI / visual context / vision / retinotopy |
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| Research Abstract |
The present study aimed to investigate the perceptual processes for resolving ambiguity and context in three-dimensional form perception, and find neural correlates for these perceptual processes. For this purpose, we mapped the brain loci of form perception, with using an ambiguous pattern of Necker Cube. We identified six activated regions in human visual cortex when subjects passively viewed three dimensional patterns depicting a cube.Our fMRI data suggested different roles of ventral, occipito-temporal and parietal cortex : occipito-temporal cortex may mediated perceptual organization, while ventral cortex may be related to perceptual categorization ; Inferior and superior parts in parietal cortex may subserve form perception but play different roles. In order to further assess the specification of visual areas in human visual cortex, we investigated the retinotopy of striate and extrastriate cortex.
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