SPATIAL STRUCTURE PERCEPTION IN CHANGING OPTICAL PATTERN

这个心理物理研究项目的长期目标是 了解人类的空间知觉。因此，有两个总体目标 是(A)确定时空关系，以提供 关于环境几何结构的信息 场景、物体和动作，以及(B)量化人类能力 来辨别这种光学信息。通过改进 通过视觉获取的光学信息的描述， 这个项目的结果应该会带来更好的理解 生理和解剖机制的基础 空间视觉，有助于视觉功能的比较评估 各种人群，方便工程设计 用于获取和显示光学数据的人工系统 信息。 实验旨在评估早期的两个相关方面 光学中对空间和时间关系的视觉敏感性 模式：(A)时空相关系的连贯性 在局部视网膜对全球光学模式的反应中，以及(B) 对表面结构的感知。拟议中的实验 评估用于区分移动中的空间关系的敏锐度， 立体的和静止的亮度图案。 对视觉连贯性的研究将评估 局部运动间全局几何关系的可检测性 位于不同视网膜位置的刺激。实验变量 包括描述相对关系的几何变换 运动、视网膜分离和偏心，空间和时间 分辨率、时间相位滞后和背景表面结构。 双目视觉相干性实验旨在确定 单目信号的时空带宽 立体视觉和量化的双目相干性 信号。 对表面结构感知的研究将(A)评估 光滑表面结构作为基本决定因素的作用 感知的空间关系，(B)评估可检测性 曲面梯度中的不连续性，以及(C)检验假设 关于从运动中感知几何结构。

The long-term goal of this psychophysical research project is to understand human spatial perception. Thus, two general objectives are (a) to identify the spatio-temporal relationships that provide information about the geometrical structure of environmental scenes, objects, and motions, and (b) to quantify human abilities for discriminating this optical information. By improving descriptions of the optical information acquired by vision, the results of this project should lead to an improved understanding of the physiological and anatomical mechanisms that underlie spatial vision, aid comparative evaluations of visual function in various human populations, and facilitate the engineering design of artificial systems for acquiring and displaying optical information. Experiments are designed to evaluate two related aspects of early visual sensitivity to spatial and temporal relations in optical patterns: (a) the coherence of spatio-temporal phase relations among local retinal responses to global optical patterns, and (b) the perception of surface structure. The proposed experiments evaluate acuities for discriminating spatial relations in moving, stereoscopic, and stationary luminance patterns. Studies of the coherence of vision will evaluate the detectabilities of global geometric relations among local moving stimuli at separate retinal locations. Experimental variables include the geometrical transformations that describe the relative motions, retinal separation and eccentricity, spatial and temporal resolution, temporal phase lags, and background surface structure. Experiments on the coherence of binocular vision aim to determine the spatio-temporal bandwidth of the monocular signals underlying stereopsis and to quantify the binocular coherence of these signals. Studies of the perception of surface structure will (a) evaluate the role of smooth surface structure as a basic determinant of perceived spatial relations, (b) evaluate the detectability of discontinuities in surface gradients, and (c) test hypotheses concerning the perception of geometric structure from motion.