INFANT CHROMATIC AND LUMINANCE CONTRAST SENSITIVITY

婴儿色彩和亮度对比度灵敏度

• 批准号: 3465730
• 负责人: ANGELA MARGARET BROWN
• 金额: $ 8.44万
• 依托单位: OHIO STATE UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-10-01 至 1993-07-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/3465730
• 关键词: adult human (21+); child physical development; color visions; cone cell; eye disorder diagnosis; human subject; infant human (0-1 year); psychometrics; psychophysics; visual photoreceptor; visual photosensitivity; visual stimulus; visual threshold

We propose to extend our basic knowledge and theoretical understanding of color vision development with three basic experiments. First, we plan to measure chromatic and luminance contrast thresholds as a function of age. We will follow the development of color vision from its inception at about age 3 months to whenever adult-like color vision is attained. The relative rates of development of chromatic and luminance contrast sensitivity may contribute to our understanding of why the color vision of young infants is so poor. Second, we plan to compare chromatic and luminance contrast sensitivity measured using sinusoidal grating stimuli (the usual stimulus) with chromatic and luminance contrast stimuli measured using edge stimuli, a stimulus that is increasingly being used in vision research. This will help us understand the relation between color vision and spatial vision during development. It is likely that edge stimuli could some day be used in clinical testing of infants, and if so the basic information from this kind of experiment will be important. Third, we plan to measure discrimination thresholds between white and stimuli differing in luminance and/or excitation purity from white. Those thresholds, measured as a function of age, will tell us whether the color vision of infants differs qualitatively from that of adults, or whether it is just uniformly less sensitive. Another set of those thresholds will measure the sensitivity of the individual receptor mechanisms, and, together with the results of the first experiment, will help us arrive at a quantitative understanding of why infants' color vision is poor.

我们建议扩展我们的基本知识和理论 通过三个基本的了解色觉发展 实验。 首先，我们计划测量色彩和亮度对比度 阈值是年龄的函数。 我们将遵循发展 从大约3个月开始的彩色视觉开始 每当达到成人彩色视觉时。 相对费率 色彩和亮度对比度灵敏度的发展可能 有助于我们理解为什么年轻的彩色视觉 婴儿是如此贫穷。 其次，我们计划比较色彩和亮度对比度 使用正弦光栅刺激测量的灵敏度（通常 刺激），测得的色素和亮度对比度刺激 使用边缘刺激，越来越多地使用的刺激 视力研究。 这将有助于我们了解 开发过程中的色觉和空间视觉。 很可能 有一天可以将边缘刺激用于临床测试 婴儿，如果是这样的话，这类基本信息 实验将很重要。 第三，我们计划测量白色之间的歧视阈值 和亮度和/或激发纯度不同的刺激与 白色的。 这些阈值以年龄的函数测量，将告诉 我们的婴儿的色觉是否与 成年人的敏感性均不太敏感。 这些阈值的另一组将衡量 单个受体机制，以及 第一个实验将帮助我们得出定量 了解为什么婴儿的色觉很差。