Computing 3D object shape from motion cues

说明(改编自申请人S摘要)本项目拟 研究人类视觉系统如何使用运动线索来构建 对象形状的三维(3D)表示。其中最突出的一个 视觉系统可以用来恢复3D形状信息的提示是 一个物体的相对二维运动？S部分。然而，目前还不清楚是哪种视觉 从运动提示中提取形状信息涉及到区域。动议 信息通常局限于背侧视觉通路和信息 物体形状通常与腹侧视觉通路有关。 因此，确定有关运动和形式的信息在哪里结合在一起 是了解大脑如何在大脑中 使用运动来构建对象形状的3D表示。我们建议 通过在一系列实验中使用功能磁共振成像来识别涉及的大脑区域， 每项研究都考察了结构与运动刺激的不同特征，包括 运动透明度、深度和对象形状。最后一组实验将 评估从运动到结构的感知依赖于 公共视觉形式区域与运动特定区域的程度 牵涉其中。

DESCRIPTION (Adapted from applicant?s abstract) This project proposes to investigate how the human visual system uses motion cues to construct three-dimensional (3D) representations of object shape. One of the most salient cues that the visual system can use to recover 3D shape information is the relative 2D motion of an object?s parts. However, it is unclear which visual areas are involved in extracting shape information from motion cues. Motion information is typically confined to the dorsal visual pathway and information about object shape is typically associated with the ventral visual pathway. Thus, determining where information about motion and form are brought together in the visual cortex is a fundamental first step in understanding how the brain uses motion to construct 3D representations of object shape. We propose to identify the brain regions involved by using fMRI in a series of experiments, each examining a different feature of structure-from-motion stimuli including motion transparency, depth, and object shape. The final set of experiments will evaluate the degree to which structure-from-motion perception relies on a common visual-form area versus the degree to which motion-specific regions are involved.