DEVELOPMENT OF HYPERACUITY IN HUMAN INFANTS

人类婴儿超视力的发展

• 批准号: 3259942
• 负责人: RUTH E MANNY
• 金额: $ 6.22万
• 依托单位: UNIVERSITY OF HOUSTON
• 依托单位国家: 美国
• 财政年份: 1984
• 资助国家: 美国
• 起止时间: 1984-08-01 至 1988-07-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/3259942
• 关键词: amblyopia; child physical development; early diagnosis; electrophysiology; evoked potentials; eye coordination disorder; human subject; infant human (0-1 year); noninvasive diagnosis; psychophysics; vision disorders; vision tests; visual stimulus; visual tracking

The development of the human visual system's spatial resolving capacities has been previoulsy studied in infants through measures of grating acuity and contrast sensitivity. However, adults are capable of making spatial discriminations (spatial interval discriminations, vernier offset discrimination, orientation discrimination, and stereoacuity) which are approximately an order of magnitude better than the minimum angle of resolution measured by Snellan or grating acuity. In addition to representing the finest measure of the human visual system's spatial resolving capacity, these hyperacuities (Westhemier 1975) or precise position acuities may offer a better method for the early identification of infants and young children with vision abnormalies. The proposed studies are designed to 1) investigatae the development of several hyperacuities over the first 6 years of life using behavioral techniques 2) develop better methods of clinically assessing visual function in infants and young children through behavioral measures of hyperacuity and 3) apply an electrophysiological technique, the visually evoked potential, to the study of the development of hyperacuity and its clinical assessment in infants and young children. Improvements in the clinical assessment of visual function in infants and young children through noninvasive behavioral and electrophysiological procedures will aid the clinician in early identification of vision anomalies and provide better methods for monitoring regimes.

人类视觉系统空间分辨率的发展 已经通过测量光栅敏锐度对婴儿进行了先前的研究 和对比敏感度。然而，成年人有能力制造空间 区分(空间间隔区分、游标偏移 歧视、方向歧视和立体视觉)，即 大约比最小角度好一个数量级 用斯奈伦或光栅敏锐度测量的分辨率。除了……之外 代表了人类视觉系统空间的最好量度 分辨率，这些超敏感度(Weshemier 1975)或精确 体位敏感度可能为早期识别提供更好的方法。 视力异常的婴幼儿。建议进行的研究 旨在1)研究几种过敏症的发展 在生命的前6年使用行为技术2)发展 临床评估婴幼儿视功能的较佳方法 儿童通过行为测量的超敏和3)应用 电生理技术，视觉诱发电位，用于研究 婴幼儿超敏视力的发展及其临床评价 和年幼的孩子。视力临床评估的改进 婴幼儿通过非侵入性行为和 电生理程序将在早期帮助临床医生 识别视力异常，并提供更好的方法 监督制度。