DEVELOPMENT OF HYPERACUITY IN HUMAN INFANTS

人类婴儿超视力的发展

• 批准号: 3259941
• 负责人: RUTH E MANNY
• 金额: $ 7.84万
• 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/3259941
• 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能力的发展 已经通过光栅敏锐度的测量在婴儿中进行了先前的研究 和对比敏感度。 然而，成年人有能力使空间 鉴别（空间间隔鉴别、游标偏移 辨别力、方向辨别力和立体视敏度）， 近似一个数量级优于最小角度 通过Snellan或光栅敏锐度测量的分辨率。 除了 代表了人类视觉系统的空间 分辨能力，这些超敏（Westheimer 1975）或精确 位置灵敏度可能为早期识别 视力异常的婴幼儿。 拟议的研究 旨在1）抑制几种超敏反应的发展 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更好方法 儿童通过行为措施的超敏和3）适用于一个 电生理技术，视觉诱发电位，研究 超敏反应的发展及其在婴儿中的临床评估 和年幼的孩子。 视力临床评估的改进 通过非侵入性的行为和 电生理程序将帮助临床医生在早期 视觉异常的识别，并提供更好的方法， 监测制度。