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A study on unified organization of visual features in object recognition and spatial vision

物体识别和空间视觉中视觉特征的统一组织研究

基本信息

批准号：
08301007
负责人：
EJIMA Yoshimichi
金额：
$ 5.5万
依托单位：
KYOTO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
1996
资助国家：
日本
起止时间：
1996 至 1998
项目状态：
已结题

项目摘要

The present study focused the binding problems of visual perceptual spatio-temporal features into object recognition and spatial vision. Using psychophysical experiments and brain imaging method, we investigated the following.1) Temporal integration in generation of contour perceptionUsing the sequential presentation of two pairs of disks with a sector removed, we investigated the temporal integration properties of subjective contour perception. It was found that the temporal integration time for subjective contour was longer than that for real contour (edge or line contour), suggesting that the retention of local information takes an important role in generation of subjective contour.2) Binocular integrationWe presented a new illusory perception of motion tranceparency caused by the binocular presentation of counter-phase flickering stimuli. It was suggested that the visual system decomposes the moving images into Fourier components, and that the decomposition may be mediated by the first order motion system such as the direction- and disparity-sensitive motion energy detection system.3) Interaction between moving edge and statinary chromatin edgeWe presented a new phenomina involed perceptually unified organization of a atationary chromatic pattern and a moving black outline or dot pattern. It was suggested that the visual system effectively uses information from moving features to define the shape of overlapping chromatic image regions.4) The others concearned 'The 2-D motion assimilation', 'Summation between nearby motion signals and facilitatory/inhibitory interaction between distant motion signals', 'Interaction between luminance and color cues in generation of neon color spreading', 'A new method for magnetoencephalography', and 'Magnetic responses of human cortical area V1 to sinusoidal grating stimuli.

本研究重点关注视觉感知时空特征与物体识别和空间视觉的结合问题。利用心理物理实验和脑成像方法，我们研究了以下内容：1）轮廓感知生成中的时间整合利用两对去除了扇区的磁盘的顺序呈现，我们研究了主观轮廓感知的时间整合特性。研究发现，主观轮廓的时间积分时间比真实轮廓（边缘或线轮廓）的时间积分长，这表明局部信息的保留在主观轮廓的生成中起着重要作用。2）双眼积分我们提出了一种新的由反相闪烁刺激的双眼呈现引起的运动透明幻觉。有人认为，视觉系统将运动图像分解为傅立叶分量，并且分解可能是由一阶运动系统（例如方向和视差敏感的运动能量检测系统）介导的。3）运动边缘和静止染色质边缘之间的相互作用我们提出了一种新的现象，涉及静止彩色图案和移动黑色轮廓或点图案的感知统一组织。有人建议，视觉系统有效地利用来自运动特征的信息来定义重叠彩色图像区域的形状。4）其他人关注“二维运动同化”、“附近运动信号与远处运动信号之间的促进/抑制相互作用之间的求和”、“霓虹灯颜色扩散生成中亮度和颜色线索之间的相互作用”、“脑磁描记术的新方法”和“人类的磁响应” 皮质区 V1 接受正弦光栅刺激。