Analysis of perceptual processing of ambiguity and context in three-dimensional form perception.

三维形式知觉中歧义和上下文的知觉加工分析。

• 批准号: 10610079
• 负责人: TAKAHASHI Shigeko
• 金额: $ 2.05万
• 依托单位: Kyoto City University of Arts
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10610079/
• 关键词: form perception; functional MRI; visual context; vision; retinotopy; 知覚的反転; 対比現象; fMRI; 奥行き知覚; 知覚的文脈

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.

本研究旨在探讨三维形状知觉中歧义消解和语境消解的知觉过程，并寻找这些知觉过程的神经相关机制。为此，我们绘制了大脑的形状知觉位点，使用一个模糊的模式的内克尔立方体。当受试者被动地观看三维立方体图形时，我们发现了6个激活的视皮层区域，我们的fMRI数据显示了腹侧、枕颞和顶叶皮层的不同功能：枕颞皮层可能介导知觉组织，而腹侧皮层可能与知觉分类有关;顶叶皮层的下、上级部分可能辅助形式知觉，但功能不同。为了进一步研究人类视皮层视区的特化，我们研究了纹状和纹外皮层的视网膜病变。

项目成果

Fukunaga,Azugawa,Yamamoto Tanaka,Ebisu,Umeda,Takahashi & Ejima: "Activities of motion-sensitive areas in extrastriate cortex for perceptual figure-ground segmentation caused by motion."29th Annual Meeting Society for Neuroscience Abstract 269.16. (1999)

福永、阿津川、山本田中、惠比寿、梅田、高桥

M. Fukunaga, T.Azukawa, H, Yamamoto., C. Tanaka, T. Ebisu, M. Umeda, S. Takahashi & Y. Ejima: "Activities of motion-sensitive areas in extrastriate cortex for perceptual figure-ground segmentation caused by motion"28th Annual Meeting Society for Neuroscie

M. Fukunaga、T.Azukawa、H、Yamamoto.、C. Tanaka、T. Ebisu、M. Umeda、S. Takahashi

Ejima,Fukunaya,Azugawa,Yamamoto,Tanaka,Ebisu,Umeda & Takahashi: "Higher-order areas related to processes of perceptual organization of visual forms in human extrastriate cortex."29th Annual Meeting Society for Neuroscience Abstract 370.13. (1999)

江岛、福谷、阿津川、山本、田中、惠比寿、梅田

阿津川,福永,山本,高橋,田中,恵飛須,梅田,江島: "ヒト腹側視覚経路における色知覚形成過程"電子情報通信学会技術研究報告. NC99-21. (1999)

Atsukawa、Fukunaga、Yamamoto、Takahashi、Tanaka、Ebisu、Umeda、Ejima：“人类腹侧视觉通路中的颜色感知形成过程”IEICE 技术报告（1999）。

阿津川、福永、山本、高橋、田中、恵飛須、梅田、江島: "ヒト腹側視覚経路における色知覚形成過程"電子情報通信学会技術研究報告. NC99. NC99-21 (1999)

Atsukawa、Fukunaga、Yamamoto、Takahashi、Tanaka、Ebisu、Umeda、Ejima：“人类腹侧视觉通路中的颜色感知形成过程”IEICE NC99-21（1999）。