PSYCHOPHYSICS OF NORMAL & DEFECTIVE COLOR VISION

正常的心理物理学

• 批准号: 3263898
• 负责人: ALLEN L NAGY
• 金额: $ 5.89万
• 依托单位: WRIGHT STATE UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 1986
• 资助国家: 美国
• 起止时间: 1986-09-01 至 1991-06-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/3263898
• 关键词: color blindness; color visions; congenital vision disorder; human subject; light adaptations; neural information processing; psychophysics; sequential perception; vision tests; visual feedback; visual fields; visual perception; visual pigments

There are two closely related goals for the proposed research. The first goal is to better understand the visual mechanisms which underlay the differences in spatial and temporal properties of color and luminance coding in normal observers. The second goal is to understand the abnormalities in these properties which occur in some color deficient observers. Psychophysical experiments will be used to study the effects of light adaptation on the spatial and temporal properties of color and luminance coding, and to determine how color and luminance coding vary with retinal location. There are two purposes to these experiments. The spatial and temporal properties of color coding clearly differ from those of luminance coding in normal observers. The first purpose is to evaluate possible models of the neural mechanisms which underlay the differences in color and luminance coding in normal observers. The second purpose of these experiments is to further understand the abnormalities in the neural coding of color information which occur in some congenital color deficient observers. The proposed research should have direct significance for theories about the mechanisms of color and luminance coding as well as impact of clinical psychophysical testing of visual defects, the testing of color vision capabilities for practical applications, and the genetics of color deficiencies.

拟议的研究有两个密切相关的目标。 第一个目标是更好地理解视觉机制， 分析了不同地理区域的空间和时间特性差异， 颜色和亮度编码。 第二个目标 就是了解这些性质的异常 在一些色觉缺失的观察者中 心理物理实验将 用于研究光适应对空间和 颜色和亮度编码的时间特性，并确定 颜色和亮度编码如何随视网膜位置变化。 那里 这些实验有两个目的。 的空间和时间 颜色编码的特性明显不同于亮度编码的特性 在正常观察者中编码。 第一个目的是评估 神经机制的可能模型， 正常观察者的颜色和亮度编码差异。 的 这些实验的第二个目的是进一步了解 颜色信息的神经编码异常， 先天性色觉缺陷的观察者。 拟议 研究应该有直接意义的理论， 颜色和亮度编码的机制以及 视觉缺陷的临床心理物理测试， 彩色视觉能力的实际应用， 颜色缺陷的遗传学